Casio WSD-F10 User manual

WSD-F10
Thank you for purchasing this watch.
Before trying to use this watch, be sure to read the Safety Precautions
in the Quick Start Guide that comes with the watch. Make sure you use
the watch correctly.
Be sure to keep all user documentation handy for future reference.
•••This•watch•can•pair•with•a•smartphone,•tablet,•or•other•device•(all•referred•
to•as•“smartphone”•in•this•manual)• running• Android™• 4.3• or• above• or•
iOS•8.2•or•above.•The•operations• and• other•details•of• your• watch•and•
smartphone•may•differ•from•those•described•in•this•manual,•depending•
on• the• smartphone’s• operating• system• type• or• version,• the• version• of•
Android•Wear™•installed•on•the•smartphone,•and•the•version•of•Android•
Wear•operation•system•running•on•this•watch.
© 2016 CASIO COMPUTER CO., LTD.
EN
User’s Guide

•••The•contents•of•this•manual•are•subject•to•change•without•notice.
•••Copying•of•this•manual,•either•in•part•or•its•entirety,•is•forbidden.•
You•are•allowed•to•use•this•manual•for•your•own•personal•use.•Any•
other•use•is•forbidden•without•the•permission•of•CASIO•COMPUTER•
CO.,•LTD.
•••CASIO•COMPUTER•CO.,•LTD.•shall•not•be•held•liable•for•any•lost•
profits•or•claims•from•third•parties•arising•out•of•the•use•of•this•
product•or•this•manual.
•••CASIO•COMPUTER•CO.,•LTD.•shall•not•be•held•liable•for•any•loss•or•
lost•profits•due•to•loss•of•data•caused•by•malfunction•or•maintenance•
of•this•product,•or•any•other•reason.
•••The•watch•and•sample•screens•depicted•in•the•illustrations•in•this•
manual•may•be•different•from•the•actual•appearance•of•the•watch.

EN-1
Contents
Watch Features ....................................... EN-4
Measurement Functions ................................ EN-6
Overview ............................................. EN-7
Package•Contents•....................................EN-7
General•Guide•.......................................EN-7
Getting Ready. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EN-8
Pairing•with•Another•Smartphone•. . . . . . . . . . . . . . . . . . . . . . . . EN-11
Basic Operations (Android Wear) . . . . . . . . . . . . . . . . . . . . . . . . EN-12
Turning•Power•On•or•Off •. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EN-12
Home•Screen•......................................EN-13
Wake•Up•..........................................EN-13
Home•Screen•Icons•..................................EN-13
Using•the•Settings•...................................EN-14
Notifications•(Card•and•Vibration)•. . . . . . . . . . . . . . . . . . . . . . . . EN-15
Incoming•Phone•Call•Notifications •. . . . . . . . . . . . . . . . . . . . . . . EN-17
Temporarily•Blocking•All•Notifications•and••
Disabling•the•Backlight•(Theater•mode)•. . . . . . . . . . . . . . . . . .EN-17
Temporarily•Boosting•Touch•Screen•Brightness•. . . . . . . . . . . . .EN-17
Controlling•the•Watch•by•Voice•Commands•. . . . . . . . . . . . . . . . EN-18
Using•Apps•........................................EN-19
Adding•Apps•and•Watch•Faces•. . . . . . . . . . . . . . . . . . . . . . . . . EN-21
Available•Functions•when•not•Connected•to•a•Smartphone •. . . .EN-21
Restoring•Connection•with•a•Smartphone •. . . . . . . . . . . . . . . . .EN-22
Smartphone•Location•Information•Settings•. . . . . . . . . . . . . . . . . EN-22
Doze•Mode•........................................EN-22
Watch Faces ......................................... EN-23
CASIO•Watch•Faces•.................................EN-23
Changing•CASIO•Watch•Face•Settings•. . . . . . . . . . . . . . . . . . . . EN-26

EN-2
Using the TOOL App (TOOL Button) . . . . . . . . . . . . . . . . . . . . . . EN-27
Basic•TOOL•App•Operations•. . . . . . . . . . . . . . . . . . . . . . . . . . . EN-29
TOOL•App•Color•Display•and•Monochrome•Display•. . . . . . . . . .EN-30
Using•Compass•.....................................EN-30
Using•Barometer•....................................EN-32
Using•Altimeter•.....................................EN-34
Using•Sunrise/sunset••
(When•connected•with•an•Android•smartphone•only) •. . . . . . .EN-38
Using•Tide•Graph••
(When•connected•with•an•Android•smartphone•only) •. . . . . . .EN-40
Using•My•Graph••
(When•connected•with•an•Android•smartphone•only) •. . . . . . .EN-45
Using the APP Button ................................. EN-47
Using the Activity App (When connected with an Android
smartphone only) ..................................... EN-48
Basic•Activity•App•Operations •. . . . . . . . . . . . . . . . . . . . . . . . . .EN-48
Screen•while•Measurement•is•in•Progress •. . . . . . . . . . . . . . . . .EN-50
Using the CASIO MOMENT SETTER+ App on a Smartphone
(Android Only) ....................................... EN-52
Installing•the•CASIO•MOMENT•SETTER+•App••
on•a•Smartphone•..................................EN-53
Watch•Face•Switching•and•Advanced•Setting•Configuration•. . . . EN-53
TOOL•Button•and•TOOL•App•Settings•. . . . . . . . . . . . . . . . . . . . EN-55
APP•Button•Settings•.................................EN-57
Registration•Details•..................................EN-57
Using•MOMENT•SETTER•..............................EN-58
Using the Timepiece App . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EN-63
Monochrome LCD Screen .............................. EN-65
Watch Errors ........................................ EN-70
Error•Code•and•Error•Message•List •. . . . . . . . . . . . . . . . . . . . . .EN-70
Restoring•Watch•Operation•. . . . . . . . . . . . . . . . . . . . . . . . . . . . EN-71

EN-3
Precautions During Use ............................... EN-72
User Maintenance .................................... EN-79
Main Specifications ................................... EN-81
Chargeable Battery Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . EN-85
Chargeable•Battery•Handling•(Please•recycle!)•. . . . . . . . . . . . . . EN-85
Protecting•Your•Private•Information••
when•Discarding•the•Watch•. . . . . . . . . . . . . . . . . . . . . . . . . . EN-85
Supplementary Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . EN-86
Open•Source•Information•. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EN-86
Copyrights•.........................................EN-86
Regulatory•Information•................................EN-86

EN-4
Watch Features
This watch is a wearable terminal Powered by Android Wear. In addition
to basic Android Wear capabilities to link up with a smartphone running
Android 4.3 or above or iOS 8.2 or above, your watch is also designed
to provide you with the toughness and performance expected from a
piece of outdoor gear.
Five-atmosphere Water Resistance + MIL-STD (United
States Department of Defense Military Standard)
Even though this watch has a built-in voice recognition microphone,
it still is water resistant up to five atmospheres. This means you can
wear your watch while swimming, fishing, etc. MIL-STD-810G standard
environment resistance allows you to wear your watch while engaged
in a variety of vigorous outdoor activities, including: mountain climbing,
cycle sports, fishing, skiing, snowboarding, and more.
Dual-layer LCD for Improved Readability
Your watch has both a color LCD and a monochrome LCD. CASIO app
operations are designed to use either the color or the monochrome
LCD. The monochrome LCD makes display contents easier to read
when outdoors under sunlight.
Dedicated Function Buttons
Each press of the TOOL button (page EN-7) cycles through compass,
altitude, and other outdoor functions, while the APP button (page EN-7)
accesses a particular app. The functions assigned to the TOOL button
and their recall sequence, and the app assigned to the APP button can
be specified with an Android smartphone.
Special CASIO MOMENT SETTER+ App for Even Greater
Versatility
Android smartphone users can get the CASIO MOMENT SETTER+
app from the Google Play™ Store. This app lets you use your Android
smartphone screen to configure detailed display settings and button
function settings. A MOMENT SETTER function lets you configure the
watch to display timely notifications to support your outdoor activities.
While mountain climbing, for example, you can have the watch let
periodically know how many meters there are to your target altitude
based on information picked up by the sensor and current position
information.

EN-5
Linking with an EX-FR100 Camera
Your watch can link with a CASIO EX-FR100 camera so you can control
camera operations from the watch.
For details, visit the CASIO website below.
http://support.casio.com/wsd/

EN-6
Measurement Functions
Your watch can take barometric pressure, altitude, bearing, and other
readings. Its built-in watch faces and applications can use readings for
display and other useful functions. Note that this watch is not a special-
purpose measuring instrument. Readings produced by measurement
functions are intended as general reference information only.
Compass (Bearing Measurement)
For serious mountain climbing and other activities that require accurate
bearing readings, take along a highly reliable compass to use in
combination with the watch’s compass.
Important!
•••Note•that•accurate•compass•readings•and/or•correction•will•not•be•
possible•in•the•areas•described•below.
•– •In•the•vicinity•of•a•permanent•magnet•(magnetic•accessory,•etc.),•
metal•objects,•high-voltage•wires,•aerial•wires,•or•electrical•household•
appliances•(TV,•computer,•cellphone,•etc.)
•– •In•motor•vehicles,•on•boats,•on•aircraft,•etc.
•– •Indoors,•especially•inside•of•reinforced•concrete•structures.
Altimeter, Barometer
The watch’s Altimeter use a pressure sensor to measure barometric
pressure, and then calculates and displays relative altitude based on the
measured value. Because of this, readings taken at different times at
the same location may produce different altitude values due to changes
in temperature, humidity, barometric pressure, and other factors. Also
note that values displayed by the watch may be different from elevations
indicated for areas where you are located. When using the watch’s
altimeter while mountain climbing, it is recommended that you perform
regular correction in accordance with the local altitude (elevation)
indications.
Tide Graph (Graphic Display of Tide Information)
The Tide Graph feature of your watch is intended to provide a rough
image of current tide conditions. Do not use its tide information for
navigation purposes. For navigation purposes, be sure to use official
tide charts issued by a reliable agency or authority for the area you are
navigating.

EN-7
Overview
Package Contents
Watch, AC adaptor, charger cable, Quick Start Guide, warranty
General Guide
(1)
(2)
(3)
(4)
(7)
(5)
(6)
(8)
(1) Charge LED
(2) Charger terminal
(3) Pressure sensor
(4) Microphone
(5) TOOL button
(6) Power button
(7) APP button
(8) Touch screen

EN-8
Getting Ready
After reading the “Safety Precautions” in the “Quick Start Guide”,
perform the steps below. Before using this watch for the first time,
perform steps 1. through 4. below in sequence.
1. Charge the Watch
1. Connect the provided charger cable to the AC adaptor, and then
plug the AC adaptor into a power outlet.
2. Connect the charger cable to the watch charger terminal.
•••The•watch’s•charge•LED•lights•red•while•charging•is•in•progress.•
The•LED•changes•to•green•when•the•watch•is•fully•charged.
•••The•watch•will•turn•on•automatically•when•the•charge•reaches•a•
certain•level.
Charge LED
AC adaptor *
* The shape of the AC adaptor supplied in your geographic area
may be different from the one shown in the illustration.
Important!
•••To•help•promote•longer•battery•life,•regular•charging•of•the•watch•
(about•once•a•month)•is•recommended•even•if•you•do•not•use•it•for•
a•long•time.
Note: After getting ready for operation, use the procedure above to
fully charge the watch whenever the battery runs low during
normal operation.

EN-9
2. Install the Android Wear App on a Smartphone
1. Search for “Android Wear” in the Google Play Store if you are
using an Android smartphone, or the iTunes App Store if you are
using an iPhone.
2. On the list of found apps that appears, select “Android Wear”
(Google Inc.) On the screen that appears, tap INSTALL.
•••Follow•the•instructions•that•appear•on•the•screen•to•complete•
the•installation.
Important!
•••When•using•this•watch•while•paired•with•an•iPhone•there•are•
limitations,•such•as•the•ability•to•add•applications•to•it.•For•details,•
go•to•the•website•below.•
http://support.casio.com/wsd/
3. Install the CASIO MOMENT SETTER+ App on the
Smartphone (Android Only)
If you are using an Android smartphone, be sure to install CASIO
MOMENT SETTER+ app in order to be able to use all of the
functionality provided by this watch.
On the Android smartphone, go to the Google Play Store, search for
CASIO MOMENT SETTER+, and then install it.
Important!
•••Starting•up•CASIO•MOMENT•SETTER+•immediately•after•installing•
it•results•in•the•error•message•shown•below•to•appear:•The•watch•is•
being•setup.•This•means•that•installation•of•the•app•on•the•smart•watch•
system•(which•is•triggered•automatically•when•you•install•the•CASIO•
MOMENT•SETTER+•app•on•your•smartphone)•is•in•progress.•During•
this•time,•the•watch•screen•will•go•black•or•watch•screen•response•
will•become•extremely•slow.•This•does•not•indicate•malfunction.•If•this•
happens,•wait•for•a•while•and•then•try•starting•up•the•CASIO•MOMENT•
SETTER+•app•or•try•operating•the•watch•again.•As•a•general•rule,•
installation•on•the•smart•watch•system•is•complete•if•the•Activity•app•is•
displayed•when•the•operation•below•is•performed•on•the•watch.
1.• •Hold•down•the•power•button•for•about•two•seconds•to•display•a•list•
of•apps.
2.• •Scroll•the•app•list•upwards•or•downwards•as•required•and•confirm•
that•“Activity”•is•shown•in•the•list.

EN-10
Important!
•••Many•of•the•watch’s•functions•require•connection•with•a•smartphone•
that•has•been•paired•with•the•watch.•Keep•the•watch•and•phone•
close•to•each•other.•A•range•of•two•meters•is•recommended•as•
a•guideline,•but•the•local•environment•(walls,•furniture,•etc.),•the•
structure•of•a•building,•and•other•factors•may•require•a•much•closer•
range.
4. Configure Settings to Pair with the Smartphone
(Pairing)
1. Move the smartphone you want to pair with close to the watch.
•••When•configuring•pairing•settings,•it•is•recommended•that•you•
have•the•smartphone•and•watch•within•one•meter•of•each•other.
2. On the smartphone, start up the Android Wear app.
•••If•your•smartphone•is•already•paired•with•an•Android•Wear•
watch•or•if•you•are•re-pairing•with•this•watch,•perform•one•of•the•
procedures•below•after•starting•up•the•Android•Wear•app.•
Android•smartphone:•In•the•upper•left•corner•of•the•screen,•tap•
the•model•name•and•then•tap•Pair with a new watch.
iPhone:•In•the•upper•right•corner•of•the•screen,•tap• •and•then•
tap•Pair with a new wearable.
3. Swipe the watch’s touch screen from right to left.
4. Scroll the list of languages that appears upwards or downwards to
find the language you want, and then tap it.
5. While reading the guidance that appears on the watch display,
swipe it from right to left.
6. Follow the instructions that appear on the watch and smartphone
screens to complete the operation.
•••If•you•experience•problems•with•configuring•pairing•settings,•visit•
the•website•below.•
http://support.casio.com/wsd/
You•can•also•find•useful•information•by•tapping•PAIRING HELP•
on•the•Android•Wear•app•screen.

EN-11
Pairing with Another Smartphone
Your watch can be paired with a single smartphone at any time. Before
pairing with a different smartphone, perform the steps below to unpair
with the current smartphone.
1. Hold down the power button for about two seconds to display a list
of apps.
2. Scroll the screen downwards and then tap Settings.
3. Scroll the screen downwards and then tap Unpair with phone. On
the confirmation screen that appears, tap .
•••This•restarts•the•watch.•Watch•restart•following•the•unpair•operation•
takes•some•time,•so•you•may•need•to•wait•for•a•while.
•••Next,•to•pair•the•watch•with•another•smartphone,•perform•the•steps•
(1.•to•4.)•under•“Getting•Ready”.

EN-12
Basic Operations (Android Wear)
This section explains basic operations of the Android Wear operating
system that your watch uses.
Note that the operations described here are subject to change due
to the type and version of the operating system being used by the
smartphone connected with the watch, changes that occur when the
watch’s operating system is updated, and other factors. For details
about Android Wear operations, visit the website below.
Android Wear Help Center
https://support.google.com/androidwear/
Turning Power On or Off
To turn power off
1. Hold down the power button for about two seconds to display a list
of apps.
2. Scroll the screen downwards and then tap Settings.
3. Scroll the screen downwards and then tap Power off. On the
confirmation screen that appears, tap .
To turn power on
Hold down the power button for about two seconds. When charging
the watch, it will also turn on automatically when the charge reaches a
certain level.
Important!
•••Watch•operation•may•become•impossible•or•unstable•immediately•
after•turning•on•the•watch•and•immediately•after•connection•with•a•
smartphone.•If•this•happens,•wait•for•a•while•and•then•try•performing•
the•desired•operation•again.

EN-13
Home Screen
The watch face screen is the Home Screen, which is the starting point
of a variety of different operations. While the Home Screen is displayed,
you can view notifications on a “card”, and launch operations using
voice commands. The screenshot below shows the Home Screen with
a card displayed.
Watch face
Card
Wake Up
If you don’t tap the touch screen for a few seconds, the watch screen
will dim. To wake up the watch and restore it to normal brightness, tap
the touch screen, press the power button, or simply turn your wrist
towards you. Also note that the watch screen will dim immediately if you
press the power button while it is normal brightness.
Home Screen Icons
Icons appear on the Home Screen to indicate the status of the watch.
Some of the options that are used are shown below.
No•smartphone•connection Airplane•mode•ON
Charging

EN-14
Using the Settings
Settings can be used to adjust touch screen brightness and other
settings, to unpair with a smartphone, and perform other operations.
You can use any of the operations below to start up Settings.
•••Hold•down•the•power•button•for•about•two•seconds•to•display•a•list•of•
apps.•Next,•tap•Settings.
•••On•the•Home•Screen,•swipe•downwards•from•the•top.•On•the•screen•
that•appears,•swipe•from•right•to•left•until•Settings•is•displayed,•and•
then•tap•Settings.
The table below explains what you can do with Settings.
Adjust•brightness Use•this•setting•to•select•a•value•that•sets•the•touch•
screen•brightness.
Change•watch•
face
Use•this•setting•to•select•the•watch•face•that•
appears•on•the•Home•Screen.
Font•size Use•this•setting•to•select•one•of•three•system•font•
sizes.
Gestures Specifies•whether•or•not•watch•operations•can•be•
performed•by•rotating•the•wrist.
Always-on•screen When•this•setting•is•turned•off,•the•watch•face•will•
change•from•a•color•screen•to•a•monochrome•
screen•after•a•period•of•non-use.
Wi-Fi Toggles•the•Wi-Fi•setting•between•Automatic•
and•OFF.•When•Wi-Fi•is•enabled,•you•can•also•
configure•Wi-Fi•settings.
Bluetooth Pairs•with•and•unpairs•from•a•nearby•Bluetooth•
terminal.
Airplane•mode Toggles•the•Airplane•mode•between•on•and•off.
Accessibility Toggles•zoomed•screen•operation•between•
enabled•and•disabled.•When•this•setting•is•enabled,•
tapping•the•touch•screen•three•times•in•succession•
will•zoom•at•the•tapped•location.•Tapping•three•
times•in•succession•again•will•return•the•screen•to•
normal•size.
Date•&•time Specifies•whether•or•not•to•sync•the•watch•settings•
with•the•smartphone’s•date,•time,•and•time•zone•
settings.

EN-15
Screen•lock Use•this•setting•to•select•Automatic•or•OFF•for•
screen•lock.•When•screen•lock•is•enabled,•the•
watch•will•go•to•sleep•and•lock•some•time•after•
you•remove•it•from•your•wrist.•To•unlock•the•watch•
after•it•goes•to•sleep,•you•need•to•draw•the•unlock•
pattern•you•specified•when•you•enabled•screen•
lock.
Lock•screen•now This•item•is•available•only•when•Automatic•is•
selected•for•Screen lock.•Selecting•Lock screen
now•immediately•puts•the•watch•to•sleep.
Permissions Configures•settings•for•rights•to•access•each•app.
Unpair•with•phone Deletes•the•pairing•settings•of•the•currently•
connected•smartphone•and•restores•watch•settings•
to•their•initial•factory•defaults.
Power•off Turns•off•watch•power.
About Displays•the•following•information•about•the•
watch:•software•version,•serial•number,•regulatory•
information,•etc.
Notifications (Card and Vibration)
When the watch receives a notification from the smartphone (incoming
mail, Google Now notification, app notification, etc.), the watch displays
a card and vibrates. Smartphone and watch settings can be configured
to control what is notified and how notification is performed.
Note: Notification settings and operations depend on the connected
smartphone operating system and versions, and other factors.
For details about notification settings, see the help provided by
your smartphone and visit the Android Wear Help Center
(https://support.google.com/androidwear/).
Cards
Cards appear at the bottom of the Home Screen to keep you informed
about a variety of information. If not all of the contents of a mail
message, SMS message, or other message does not fit within a card,
you can tap the card and then swipe to scroll the displayed text. With
some cards, swiping from right to left will display detailed information or
operation buttons.

EN-16
To browse through cards
If the watch received multiple notifications, you can sequentially browse
through cards by swiping the currently displayed card upwards. Swiping
downwards browses back to previous cards.
To hide and re-show cards
While the first card in the series is displayed on the Home Screen, swipe
downwards to hide the cards. To re-show the cards, swipe upwards
from the bottom of the Home Screen.
Blocking Notifications
You can block or unblock notifications form a particular app, or even
temporarily block all notifications.
To block notifications from a particular app
1. On the Home Screen, display a card received from the app.
2. Swipe from right to left until Block app is displayed, and then tap it.
3. In response to the confirmation message that appears, tap .
To unblock notifications
1. Open up the Android Wear app on your smartphone.
2. Tap .
3. Tap Block app notifications.
Important!
•••Blocking•notification•from•any•CASIO•app•will•block•notification•from•
all•CASIO•apps.•Also,•unblocking•CASIO•MOMENT•SETTER+•app•
notifications•unblocks•all•CASIO•app•notifications.
To block all notifications temporarily
See “Temporarily Blocking All Notifications and Disabling the Backlight
(Theater mode)”.

EN-17
Incoming Phone Call Notifications
When a phone comes in on the smartphone, the watch displays a
notification and vibrates. If the caller’s number is registered in contacts,
the watch will display the caller’s name and image (when one is
available).
To accept the incoming call, swipe the touch screen from right to left.
You will then be able to talk with the caller on the smartphone.
To reject an incoming call, swipe the touch screen from left to right.
You can also respond with a message using one of the preset
responses.
Temporarily Blocking All Notifications and
Disabling the Backlight (Theater mode)
Pressing the power button twice in quick succession will enter the
watch’s Theater mode. This switches to the monochrome screen, and
temporarily disables the backlight and blocks notifications. The watch
remains in the Theater mode even if you tap the touch screen or move
the watch.
You can also perform the steps below to enter the Theater mode.
1. Swipe downwards from the top edge of the Home Screen.
2. Swipe from right to left until Theater mode is displayed, and then
tap it.
To exit the Theater mode
Press the power button.
Temporarily Boosting Touch Screen Brightness
Press the power button three times in quick succession to boost touch
screen brightness for about five seconds. You can also perform the
steps below.
1. Swipe downwards from the top edge of the Home Screen.
2. Swipe from right to left until Brightness boost is displayed, and then
tap it.

EN-18
Controlling the Watch by Voice Commands
You can use voice commands to the watch to perform operations such
as those below.
•••Creating•memos,•configuring•reminder,•alarm,•and•timer•settings
•••Checking•appointments
•••Responding•to•mail•and•SMS•messages
•••Checking•temperature,•sports,•movie,•and•other•information
•••Looking•up•the•meanings•of•words,•translating•terms
•••Converting•between•different•units•and•currency•units
To start a voice command operation
While the Home Screen is displayed, say “OK Google” while facing the
watch. This will display the “Speak now” prompt. Or you could swipe
the Home Screen from right to left until “Speak now” is displayed,
You can control the watch with voice commands while “Speak now” is
displayed.
Note: Scrolling the screen downwards while “Speak now” is displayed
will display a list of the voice commands, such as “Take a note”.
Tapping an item in the list will start up the app associated with it.
For example, tapping Stopwatch will start up the Stopwatch app.
Voice Command Supported Languages
Voice commands can be used while any one of the following languages
is selected: Japanese, English, French, German, Italian, Korean,
Russian, Spanish, or Portuguese (Brazilian). Some voice actions are not
available in all languages and countries.
Note: To change the language, use your smartphone.