Tobii Pro Mobile Device Stand User manual

Tobii Pro Mobile Device Stand
User’s Manual

User’s manual Tobii Pro Mobile Device Stand
Version 1.0.8
03/2019
ll rights reserved.
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Content subject to change without notice.
Please check the Tobii Pro website www.tobiipro.com for up-
dated versions of this document.

Table of Contents
1 On Safety ...................................................................................................................................... 1
1.1 Intended Use .........................................................................................................................1
1.2 Mounting Warning..................................................................................................................1
1.3 Usage Warning......................................................................................................................1
1.4 Small Parts Warning...............................................................................................................1
2 Product Description ....................................................................................................................... 2
2.1 Intended use..........................................................................................................................2
2.2 Tobii Pro Mobile Device Stand – Technical Specifications ...........................................................2
2.3 Package Contents..................................................................................................................3
2.3.1 What is Included.....................................................................................................3
2.3.2 Tobii Pro X3 compatibility kit.....................................................................................4
2.4 Considerations ......................................................................................................................4
2.4.1 Light Conditions......................................................................................................4
2.4.2 Eyelashes...............................................................................................................4
2.4.3 Droopy Eyelids........................................................................................................4
2.4.4 Glasses and Contact Lenses....................................................................................4
3 ssembly Instructions .................................................................................................................... 5
3.1 ssembling Tobii Pro Mobile Device Stand................................................................................6
3.2 ttaching a mobile device........................................................................................................9
3.3 Mounting the Calibration Plate ...............................................................................................10
3.4 djusting the Tilt ngle of the Tobii Pro Mobile Device Stand.....................................................11
3.5 Mounting the Eye Tracker Extension........................................................................................11
4 Configuring Eye Trackers from Tobii Pro with the Mobile Device Stand ........................................ 13
4.1 Using Eye Tracker Manager to configure the eye tracker............................................................13
4.1.1 Installing Eye Tracker Manager................................................................................13
4.1.2 ccessing the configuration tool .............................................................................13
4.1.3 Configuring the eye tracker manually........................................................................13
4.1.4 Configuration parameters.......................................................................................14
4.2 Recording eye-tracking data from mobile devices with Pro Lab and Mobile Device Stand ..............15
4.2.1 Starting a scene camera-based recording ................................................................15
4.2.2 Moderating a scene camera-based recording ...........................................................16
4.2.3 Performing a scene camera-based calibration...........................................................16
4.2.4 Ending a recording................................................................................................16
4.2.5 Participants and Participant Variables ......................................................................17
4.3 Recording eye-tracking data from mobile devices with Tobii Pro Studio and Mobile Device
Stand..................................................................................................................................18
4.3.1 Sound and User Camera........................................................................................20
4.3.2 Running an Eye-Tracking Test.................................................................................21

1 On Safety
1.1 Intended Use
Tobii Pro Mobile Device Stand is designed to be used only with Tobii Pro X2-30/X2-60/X3-120/Nano Eye Tracker (no other
types of eye trackers can or should be used with the stand). s with the Pro X2-30/X2-60/X3-120/Nano eye trackers, the stand
is intended only for use in office environments. Read this User’s Manual carefully before assembling or using the stand.
1.2 Mounting Warning
Pro Mobile Device Stand is designed to be mounted on a table. Be careful when mounting or using the stand so as
not to cause injury or damage. Make sure the stand is assembled correctly and that the eye tracker is properly fitted
on the stand before use to avoid damaging the stand, the eye tracker or the test participant. ssembly instructions
are on page 5.
1.3 Usage Warning
Please follow the instructions in this User’s Manual carefully. If incorrectly assembled or used, the eye tracker or parts
of Tobii Pro Mobile Device Stand can be damaged and may even cause injuries. Should the device for any reason
harm someone or damage something due to falling or other incident, neither Tobii nor any of its representatives will
be responsible or liable for any damages or injuries that may arise. Mounting and use of the stand is done entirely at
the user’s own risk.
When using and adjusting the angle of the Tobii Pro Mobile Device Stand, be careful so as not to injure the test par-
ticipant or yourself as there is a risk of squeezing objects or fingers between moving parts. The scene camera holder
and other parts of the product may cause injury if it strikes the head or other body parts.
1.4 Small Parts Warning
Pro Mobile Device Stand is composed of numerous separate, assembled parts. In the hands of a child some of these
parts may become unattached and may possibly constitute a choking hazard or other danger to the child. Young chil-
dren and animals should not have access to or use the device without parental or guardian supervision.
Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US 1 On Safety 1

2 Product Description
2.1 Intended use
The Pro Mobile Device Stand is designed to be used with a Pro X2-30/X2-60/X3-120/Nano Eye Tracker (no other types of eye
trackers can or should be used together with the stand), and a Windows computer running the Tobii Studio or Tobii Pro Lab
software.
Note: No eye tracker, computer or software license is included.
n entire mobile device testing solution comprises a Pro Mobile Device Stand, one Pro X2-30, X2-60, X3-120, or Nano eye
tracker and the computer running Tobii Studio or Pro Lab. The compatibility between Tobii Pro eye trackers and Tobii Pro soft-
ware is listed in the Compatibility Table in chapter 4, page 13.
The Tobii Mobile Device Testing Solution enables collection of eye tracking data during natural interaction with smartphones,
tablet computers and other devices or objects of similar size such as books or brochures. The tested device (e.g. smartphone
or tablet) is attached to a supplied holder using adhesive mounting putty or a Nanopad to keep the device in the correct position
throughout data collection. The holder allows participants to switch the device orientation between landscape and portrait
mode.
The stand is delivered with all necessary equipment for eight different configurations optimized for different devices and setups.
ll equipment fits into the supplied travel case. The stand includes an adjustable scene camera (that points at and films the mo-
bile device) to enable capturing of user actions and the user interface (Eye tracking data will be superimposed on images and
video captured with the scene camera in the analysis software, Tobii Studio or Pro Lab). Sound can also be recorded though
the scene camera to be played back in Tobii Studio or Pro Lab. The stand and one eye tracker fits in the supplied travel case
which is designed for easy transportation of the entire solution.
The mobile device stand supports both Pro X2 and X3 product families, as well as the Pro Nano eye tracker. The package in-
cludes a Pro X3-120 Eye Tracker compatibility kit (adapter plate and a 1.8 m long USB 3 cable) for use with a Pro X3–120 eye
tracker. This adapter plate is also compatible with the Tobii Pro Nano eye tracker. The Pro X3–120 Eye Tracker compatibility kit
is also available to buy separately for clients already in possession of a Pro X2 Mobile Device Stand; please contact Tobii Sales
for more information.
2.2 To ii Pro Mo ile Device Stand – Technical Specifications
Compatible eye trackers: Tobii X2-30, Tobii X2-60, Tobii Pro X3-120, Pro Nano (not
included).
Supported devices: Devices up to 31.9 cm (12.6") in diameter can be rotated
360°. In a fixed position, devices measuring up to 31.9 cm
(12.6”) in height can be used, no limitations in width. In-
cludes two different holders for tablets and smart phones.
22 Product Description Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US

Configurations: The stand is delivered with all necessary equipment for eight
different configurations optimized for different devices and
setups. ll equipment fits into the supplied travel case.
Scene camera: Full HD USB camera, Logitech C920 HD, supports 1920 x
1080p and lower resolutions.
Sound recording: Through the scene camera using built-in dual stereo
microphones.
Position of eye tracker: Two positions (high and low), 8 cm (3.1") in-between posi-
tions. Moves the head movement box 8 cm (3.1").
Possible position of mobile device: Flat holder (lower) and bracket holder (higher), 8 cm (3.1")
in-between positions. The mobile device can be fixed and ro-
tated 360°.
Possible position of scene camera: Scene camera arm can be set in two positions, 9.2 cm (3.6")
in-between positions.
Maximum tilt: 27° (10° forward, 17° backward), to adjust for participant
height.
Mounting solution: Integrated screw clamps for table mounting.
Stand dimensions: Footprint: 42 × 25 cm (16.5 x 9.8″)
Height: Maximum 68 cm (26.8")
Stand construction: Durable aluminium and steel components
Weight (including travel case): 13.8 kg (30.4 lbs.)
Color: Black
2.3 Package Contents
2.3.1 What is Included
The package for Pro Mobile Device Stand includes:
1. Mobile device stand main body with table clamp (1 piece)
2. Scene camera holder (with Logitech webcam) (1 piece)
3. Guide bars (2 pieces)
4. Eye tracker extension (1 piece)
5. Flat holder for tablets (2 pieces)
6. Bracket holder for smart phones (2 pieces)
7. Calibration plate (2 pieces)
8. Calibration plate fixing rods (2 pieces, one long and one short)
9. Scene camera rod — long (1 piece)
10. Scene camera rod — short (1 piece)
11. Hand screws M6x15 (4 pieces, 2 pieces for Guide bars, 2 pieces for eye tracker extension)
12. Hand screws M6x20 (4 pieces, for scene camera rod)
13. Nanopad (5 pieces)
14. Mounting putty (1 piece)
15. Velcro (10 pieces, 15 cm length each)
16. USB extension cable for X2 product family (1 piece, 0,8 m length)
17. llen key 2 mm for holder adjustments (1 piece)
18. llen key 4 mm for scene camera removal (1 piece)
19. Travel case (1 piece)
20. Eye tracker mounting plate (1 piece)
Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US 2 Product Description 3

2.3.2 Tobii Pro X3 compatibility kit
The compatibility kit for Pro X3 consists of one mounting adapter for both the Pro X3–120 Eye Tracker and the Pro Nano Eye
Tracker (see image above) and one 1.8 m USB 3 cable. These two items can be ordered separately for users of the previous
X2 only MDS package.
2.4 Considerations
The Pro Mobile Device Stand is designed to make optimal use of the Tobii Pro eye tracker (X2-30, X2-60, X3-120, Pro Nano)
in mobile device testing. To ensure superior quality of the collected eye tracking data, please consider the following sections.
2.4.1 Light Conditions
We recommend you conduct your eye tracking study in a controlled and well-lit environment. Sunlight contains high levels of in-
frared light that will interfere with the eye tracker system and should be avoided.
2.4.2 Eyelashes
Eyelashes can be obstructive when the participants’ eyes are less open, especially if participants are wearing mascara. In rare
cases, the eyelashes can completely block the view of the participant´s pupils, making eye tracking impossible.
2.4.3 Droopy Eyelids
Droopy eyelids or otherwise obstructive eyelids can block the view of the participant´s pupils. In rare cases such eyelids may
completely block the view of the participant´s pupils, making eye tracking impossible.
2.4.4 Glasses and Contact Lenses
Participants with bifocal or progressive glasses should be screened out, or asked to remove their glasses. Bifocals and progres-
sive glasses may reduce accuracy. Contact lenses may slightly increase noise but do not normally introduce any error into the
data. Colored or fancy lenses that change the appearance of the pupil or iris should be avoided as they may make eye tracking
impossible.
42 Product Description Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US

3 Assem ly Instructions
To meet the needs of different device types, participant height and study objectives, Tobii Pro Mobile Device Stand can be as-
sembled to create eight different configurations ( 1, 2, B1, B2, C1, C2, D1 and D2). ny of these configurations can be opti-
mal for a specific testing scenario. In the following instructions, configuration 2 will be assembled. In standard scenarios,
configurations 1 and 2 are recommended for most tablets and smart phones.
Configuration 2, recommended for most tablets and smart phones.
Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US 3 ssembly Instructions 5

3.1 Assem ling To ii Pro Mo ile Device Stand
To assemble the stand (configuration A2):
1. Make sure you have all the pieces required to assemble the stand. Remove all the pieces from the travel case before you
start to assemble it.
2. Slide the main body onto the table top as shown in the picture.
Make sure it slides on as far as possible so that the stand sits
tightly.
3. Firmly tighten the clamp screws underneath the table top.
4. Slide the long scene camera rod into place for setup 2. There are
two scene camera rods available: one longer that positions the
scene camera farther away (for setups /B/C/D-2) and one short-
er that positions the scene camera closer to the tested device (for
setups /B/C/D–1).
63 ssembly Instructions Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US

5. Use two of the larger (M6x20) hand screws to fasten the scene
camera rod to the main body on the stand.
6. Slide the scene camera holder (with Logitech webcam) onto the
scene camera rod. Use the two remaining larger (M6x20) hand
screws to fasten the scene camera holder to the rod.
7. Tie the scene camera USB cable tightly to the stand use pieces of
Velcro all the way down to the table along the scene camera rod.
8. Slide the guide bars into the holes on the side of the stand’s main
body, and lock them into place by fastening the smaller (M6x15)
hand screws. The purpose of the guide bars is to make sure that
the participants’ arms do not occlude the eye tracker’s view of the
participants’ eyes. The participants’ arms should be on the outside
of the guide bars at all times.
Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US 3 ssembly Instructions 7

9. Carefully push the flat holder straight into the hole in the center of
the main body, until it snaps into place. Make sure that the holder
can be turned both clockwise and counter-clockwise, and that it
stays at 90 degree angles. There are two different mobile device
holders available: one flat holder that is suitable for larger smart-
phones and tablets (for configurations 1, 2, C1 and, C2) and
one bracket holder that allows the participant to hold smaller mo-
bile devices more naturally and closer to the body (for configura-
tions B1, B2, D1 and, D2).
10. Mounting a Pro X2–30 and Pro X2–60 eye tracker into position.
• Procedure
1. Carefully place the eye tracker into the eye tracker
slot at the bottom of the main body.
2. Make sure the eye tracker is turned so that the Tobii
logo can be read (not upside down).
3. Push the eye tracker into the slot until it snaps into
place. (You may need to manually adjust the eye
tracker position to get it to snap into its correct
place.)
Don’t try to mount a Pro X2–30 or X2–60 eye tracker into
place when the adapter bracket is in place, and vice versa, don’t try to mount a Pro X3–120 or Pro Nano eye
tracker into place without first fitting the adapter bracket. The eye tracker might fall down and break.
11. Mounting a Pro X3–120 and Pro Nano eye tracker into position.
• Procedure:
1. Place the adapter bracket (see X3–120 Mounting dapter)
into the eye tracker slot and make sure it magnetically
clicks into place.
2. Carefully place the eye tracker into the eye tracker slot at
the bottom of the main body.
3. Make sure the eye tracker is not mounted upsidedown, the
eye tracker’s USB port should be facing left.
4. Push the eye tracker into the slot until it snaps into place.
(You may need to manually adjust the eye tracker position
to get it to snap into its correct place.)
s the Pro X3–120 eye tracker is wider than the X2 units, it is necessary to either turn the guide bars up-
wards, as in the image right above, or to remove them completely, to avoid interfering with the eye tracker’s
cameras.
83 ssembly Instructions Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US

12. To make sure the eye tracker stays in place and avoid damage
should someone pull the USB cable, fasten the USB cable with a
piece of Velcro to the main body.
13. ttach USB cable
• For the Pro X2–30/60 eye tracker: ttach the included USB extension cable to the eye tracker’s USB cable.
• For the Pro X3–120 eye tracker: ttach the included 1.8 m USB 3 cable to the eye tracker’s USB port.
• For the Pro Nano eye tracker: ttach the included USB extension cable to the eye tracker’s USB cable.
3.2 Attaching a mo ile device
To attach the mobile device (or other tested object) on the Mobile Device Stand, use either adhesive mounting putty (left in pic-
ture) or the Nanopad (right in picture). The mounting putty will adapt to different shapes and textures, and stick more firmly while
the Nanopad allows easier device mounting and removal.
To use the mounting putty:
1. Knead a piece of the putty, large enough to cover the mobile device holder, to make it softer (it sticks better when soft).
2. Firmly press the mounting putty on the holder and then gently press the device on top of the putty.
To remove the device, use a twisting motion (mild force) to avoid any damage to the device. The mounting putty can be reused
many times. Makes sure that the putty does not get dirty to maintain its adhesive strength.
To use the Nanopad:
1. Place the Nanopad on the mobile device holder.
2. Gently press the device onto the Nanopad
To remove the device, gently lift the mobile device in one of its corners and it will come off slowly. The Nanopad is reusable and
can be cut into smaller pieces to match the size of the mobile device.
Handle the mobile device gently when attaching or removing it to avoid damaging to the screen or the device.
Make sure the mobile device is securely attached to the mobile device holder otherwise it may fall off the holder and
be damaged or even break.
Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US 3 ssembly Instructions 9

3.3 Mounting the Cali ration Plate
For each participant, the calibration plate needs to be mounted before calibration and dismounted before data collection. The
calibration plate is used when calibrating a participant in Tobii Studio, Pro Lab or Eye Tracker Manager before each recording.
The mobile device you intend to use during the test should be attached to the mobile device holder before mounting the calibra-
tion plate.
To mount the calibration plate:
1. Locate the appropriate calibration plate fixing rod. The short steel rod is used when the flat holder is mounted (configura-
tions 1, 2, C1 and C2) and the long steel rod is used when the bracket holder is mounted (configurations B1, B2, D1
and D2).
2. Place the calibration plate fixing rod in the hole located below the
hand screws that hold the guide bars.
3. Place the calibration plate on top of the mobile device. Make sure
that the U-shaped cut out of the plate fits around the scene cam-
era pole.
4. djust the calibration plate so that the holes cut in the calibration
plate align with the two rods located next to the scene camera
pole. lign the hole at the bottom of the calibration plate with the
calibration plate fixing rod.
5. Once the holes are aligned with the rods, push the calibration plate down towards the mobile device until it is resting flat on
top.
To remove the calibration plate:
1. Carefully lift the calibration plate from its fixed position, before removing it.
10 3 ssembly Instructions Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US

2. Remove the calibration plate fixing rod by pulling it straight out.
3.4 Adjusting the Tilt Angle of the To ii Pro Mo ile Device Stand
The Mobile Device Stand tilt angle can be adjusted to accommodate for different participant heights, positions and setups. The
objective when adjusting the tilt angle is to make sure the participant is in the optimal position for the eye tracker. Each partici-
pant’s position should be examined and adjusted using the Track Status feature in Tobii Studio, Pro Lab or Eye Tracker Manag-
er, before the calibration procedure starts.
To adjust the tilt angle of the Tobii Pro Mobile Device Stand:
1. Loosen the large hand screws on the sides of the main body.
2. djust the angle by turning the metal cylinder at the back of the
main body. Turn clockwise to tilt the stand forward, turn counter-
clockwise to tilt the stand backwards.
When adjusting the angle of the Mobile Device Stand be
careful not to injure the test participant or yourself as
there is a risk of objects or fingers being squeezed be-
tween moving parts. The scene camera holder can cause
injuries if it strikes the head or other body parts.
3. Tighten the large hand screws on the side of the main body to ensure steadiness of the stand during testing.
3.5 Mounting the Eye Tracker Extension
In some testing scenarios the participants may be too far from the eye tracker (e.g. if the person is very tall or is sitting on a high
chair). In such cases the eye tracker extension can be used to reduce the distance between the participants’ eyes and the eye
tracker.
Having the participant sit farther away from the mobile device (possible when using the eye tracker extension) will enable eye
tracking on larger devices. For a Tobii X2-30/X2-60 Eye Tracker the maximum participant gaze angle is 31º (see technical
specification for further details on gaze angles), increasing the distance between the participant and the mobile device will im-
prove the eye tracking data quality for larger devices. See illustration.
Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US 3 ssembly Instructions 11

To mount the eye trac er using the eye trac er extension:
1. Place the eye tracker extension into the eye tracker slot where the
eye tracker would normally be placed. Make sure the eye tracker
extension is mounted as shown in the magnified illustration.
2. Lock the eye tracker extension into place with two small (M6x15)
hand screws, screwed from the back of the eye tracker slot in the
main body.
3. Carefully place the eye tracker into the slot on the eye tracker ex-
tension. Make sure the eye tracker is not turned upsidedown. Push
the eye tracker into the slot until it snaps into place. (You may need
to manually adjust the eye tracker position to get it to snap into its
correct position.
If using a Tobii Pro X3–120 or Tobii Pro Nano eye tracker
you must attach the adapter bracket into the eye tracker
slot before placing the X3–120 eye tracker into the slot.
lso remember to either turn the side guides upwards or
remove them completely so the eye tracker’s cameras are
not obstructed (see Section 3.1).
12 3 ssembly Instructions Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US

4 Configuring Eye Trackers from To ii Pro
with the Mo ile Device Stand
s described in section 2.1, the mobile device testing solution comprises of:
• Pro Mobile Device Stand
• Compatible eye tracker from Tobii Pro
• Computer for the eye-tracking software
– Software to configure the eye tracker
– Stimulus presentation and recording software
Compatibility Table
Compatible eye trackers Software for stimulus
presentation and
recording
Software for configuring
the eye tracker
Operating system
Tobii Pro Nano Tobii Pro Lab Eye Tracker Manager Windows
Tobii Pro X3-120 Tobii Pro Lab
Tobii Studio
Eye Tracker Manager Windows
Tobii Pro X2-30/X2-60 Tobii Pro Lab
Tobii Studio
Eye Tracker Manager Windows
4.1 Using Eye Tracker Manager to configure the eye tracker
The Pro Eye Tracker Manager allows user to configure the eye tracker for different setups, including the Mobile Device Stand,
with additional features, such as the possibility of performing a calibration and evaluating the results.
Note! Use Eye Tracker Manager to install the latest driver and firmware for your eye tracker.
4.1.1 Installing Eye Tracker Manager
1. Download the application from the web (links: Windows)
2. Follow the on-screen instructions to complete the installation.
4.1.2 ccessing the configuration tool
1. Open Eye Tracker Manager. list of the discovered eye trackers is displayed.
2. Click on the eye tracker you want to configure.
3. In the right panel, go to Display Setup.
4. t Select Setup, open the dropdown menu and click on “Create New”. setup window appears.
5. Select Mobile Device Stand. second setup window appears.
6. Select the Mobile Device Stand configuration you are using.
7. Your eye tracker has the correct display setup for eye tracking with the Mobile Device stand. Exit the program.
Continue your mobile device testing by setting up your stimulus presentation and recording software. Read section 4.2 for data
collection with Tobii Pro Lab and section 4.3 for Tobii Pro Studio
4.1.3 Configuring the eye tracker manually
If you wish to setup your eye tracker manually, use the following procedure:
1. Open Eye Tracker Manager. list of discovered eye trackers is displayed.
2. Click on the eye tracker you want to configure.
3. In the right panel, go to Display Setup.
4. t Select Setup, open the dropdown menu and click on "Create New". setup window appears.
Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US
4 Configuring Eye Trackers from Tobii Pro with the Mobile Device
Stand 13

5. Select the option “Eye Tracker is not attached to the monitor”. setup wizard appears.
6. Enter the parameters corresponding to your Mobile Device Stand configuration as listed in the table below.
7. If you have altered the position of eye tracker, relative to the display area, to better suit your study design, modify any of
the measurements in the table accordingly.
a. Measure the height, width and tilt angle of your display area, and enter the values in their respective fields, and click
Next.
b. Measure the tilt angle of the eye tracker, the distance to the display, and the height difference between the eye
tracker and the display. Enter the values in their respective fields and click Next.
8. Name your preset and click on "Finish" to save it and to send it to the eye tracker.
9. Test your configuration by performing a calibration and verification test.
Mobile Device Stand configuration for Tobii Pro X2-30/X2-60/X3-120/
Nano
1/ 2 B1/B2 C1/C2 D1/D2
Display rea Width
of the eye-tracked
surface
140 mm 140 mm 140 mm 140 mm
Height
of the eye-tracked
surface
140 mm 140 mm 140 mm 140 mm
ngle
of the mobile
device
0 Deg 0 Deg 0 Deg 0 Deg
Eye Tracker ngle
of the eye tracker
-5.2 Deg -5.2 Deg -5.2 Deg -5.2 Deg
Horizontal
difference
between the top
of the eye tracker
and the lower end
of the eye tracked
surface
–160 mm –240 mm –80 mm –160 mm
Vertical difference
between the top
of the eye tracker
and the lower end
of the eye tracked
surface
57 mm 57 mm 57 mm 57 mm
If you had already created a preset and want to modify it:
1. Go to step 4 above
2. Instead of selecting "Create New", select the preset you wish to modify.
3. Click on the cogwheel to the right of the "Preset" list. The parameters appear.
4. Modify the parameters and save them.
4.1.4 Configuration parameters
ll parameters are measured in relation to a reference point on the eye tracker hardware. That reference point varies depending
on what eye tracker model you are using. Check the user's manual of your eye tracker for details.
The wizard for when the Eye Tracker is not attached to the monitor has the following parameters.
•Display area — The correct display or stimuli size must always be added to the X Configuration Tool. The ctive Dis-
play rea is represented by the area on which calibration is performed. For monitors, TV screens, and other displays,
measure the size of the visible active area on the screen where you see the actual image. For projected displays,
14 4 Configuring Eye Trackers from Tobii Pro with the Mobile Device
Stand Tobii Pro Mobile Device Stand User’s manual v.1.0.8 - en-US

measure the size of the visible projection on the display. In a setup where the stimuli are filmed by a scene camera, the
active display area must be calculated from the relevant calibration grid size.
•Display angle — Measure the angle between the vertical plane and the active display with the digital angle meter. In a
scene camera setup, measure the angle between the vertical plane and the calibration grid. If the display is tilted for-
ward, enter a negative angle (put "-" in front of the value). If the active display is completely vertical, the angle value is 0.
In a scene camera setup where you want to track objects on a horizontal table, the angle is 90 degrees.
•Eye tracker angle — Use a digital angle gauge or similar tool to measure the angle of the eye tracker. In many setups,
the angle is around 25 degrees.
•Height difference — Measure the height difference between the measuring point on the eye tracker and the bottom of
the active display area. If the active display is located below the measuring point on the eye tracker (for example, in a
projector setup), the value is negative; enter the value in the X Configuration Tool prefixed with a "-".
•Distance — Measure the distance from the measuring point on the eye tracker to the front of the active display of the
monitor, projection screen, or TV screen; or in a scene camera setup to the virtual screen. If the measuring point on the
eye tracker is located behind the active display, enter a negative distance (put "-" in front of the value).
You ensure good quality of the eye-tracking data by measuring and specifying all the parameters accurately.
4.2 Recording eye-tracking data from mo ile devices with Pro La and
Mo ile Device Stand
The Pro Mobile Device Stand solution only works with the “Scene Camera” project type in Pro Lab. Its Record module guides
you through the procedure of selecting eye tracker and scene camera, performing a scene camera-based calibration, and man-
aging your participants and recordings.
Before you start, check that you have installed the Mobile Device Stand’s scene camera, that is, Logitech HD Pro Webcam
C920.
1. Insert the scene camera’s USB connector into a USB port on your computer.
2. Installation starts automatically. Follow the instructions of the installation guide.
Note: Because the driver is retrieved online, the computer needs an internet connection.
4.2.1 Starting a scene camera-based recording
When you have created a new scene camera project, or opened an existing one, the Project Overview window appears on your
screen. Open the Record module by clicking the Record option in the main menu bar.
Procedure for making a recording:
1. Check that the devices used for the recording are enabled and selected. They (e.g. the eye tracker, the Logitech HD Pro
Webcam C920 scene camera, the HD Pro Wecam microphone, and TTL out port) are represented by cards at the top
of the window. Note that there is no Timeline(s) in Scene Camera projects. See the Tobii Pro Lab user manual, section
6.5 Changing Device Settings for more information.
The Scene Camera card is only displayed when the Logitech HD Pro Webcam C920 camera is connected to
the system.
2. Deactivate the utofocus of the Logitech HD Pro Webcam C920 camera. If utofocus is active during a recording, fo-
cus may shift and cause incorrect data mapping.
a. Do X
b. Do Y
c. Do Z
3. Sound is recorded by a connected microphone by default. If you don’t want to record sound, set this on the Scene Cam-
era card by clicking on the card and disabling the “Use audio” switch. If more than one microphone are connected to
your system, select which one to use in your recording.
4. Select which participant you are recording. If there are no recordings with that person, click on the “+New” button and
enter the name of the participant in the name field. If no name is entered, Pro Lab suggests one, such as “Participant1.”
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You can define or edit already-defined participant variables; see the Tobii Pro Lab user manual, section 6.2.5
Participants and Participant Variables for more information.
5. Enter the recording’s name in the “Recording name” input field in the Recording section. If no name is entered, Pro Lab
suggests a one, such as “Recording1.”
6. Start the recording by clicking the “Start recording” button.
When you use an eye tracker that is not attached to a monitor, it must be configured so that the application registers
where the eye tracker is located in relation to the stimulus and what area is supposed to be measured. See section
4.1 above for more information.
If you disregard configuring the eye tracker, you will get incorrectly mapped data.
4.2.2 Moderating a scene camera-based recording
When a recording starts, the Pro Lab application window switches to the moderator view. It displays the video of the scene
camera and informs the moderator whether the eye tracker is detecting gaze, whether the participant is positioned in a way that
enables data collection, for how long the recording has been running , and what participant name and recording name are used.
It also provides the moderator with a way of terminating the recording at any time
4.2.3 Performing a scene camera-based calibration
You ensure good eye-tracking data by performing a calibration before starting data collection for analysis. Preferably, use the
pre-made calibration plate that is included in accessories, because the MDS presets in Eye Tracker Manager are set up for it. If
you use another plate, recalculate width and height and the horizontal distance.
This image is an example of a calibration board
The calibration controls are displayed in the Record module.
Procedure for performing a calibration:
1. Mount the calibration plate as described in section 3.3 above.
a. Set the active area that you want to measure by moving the four purple markers to the corners of your calibration
plate.
b. dd the desired calibration points by dragging them from the small box in the top right corner of the window onto
the calibration points marked on the calibration plate.
c. When you are done, lock the calibration plane by clicking the pad-lock symbol on the right side of the window.
2. Start the calibration by clicking the “Calibrate” button. Two buttons appear: “Calibrate point” and “ bort calibration”.
3. The first calibration point is indicated. Instruct the participant to look at it. When she/he does it, press “Calibrate point”.
Repeat this step for each calibration point.
4. You abort the calibration by pressing “ bort calibration”.
4.2.4 Ending a recording
recording can either end when the last stimulus has been displayed or by an action of the moderator.
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