Tobii Pro Glasses 3 User manual

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TobiiProGlasses3
UserManual
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TobiiProGlasses3UserManual
v1.18
September2023
Allrightsreserved.
Copyright©TobiiAB(publ)

Theinformationcontainedinthisdocumentisproprietaryto
TobiiAB.Anyreproductioninpartorwholewithoutpriorwritten
authorizationbyTobiiABisprohibited.
Productsthatarereferredtointhisdocumentmaybeeithertrade-
marksand/orregisteredtrademarksoftherespectiveowners.The
publisherandtheauthormakenoclaimtothesetrademarks.
Whileeveryprecautionhasbeentakeninthepreparationofthis
document,thepublisherandtheauthorassumenoresponsibilityfor
errorsoromissions,orfordamagesresultingfromtheuseof
informationcontainedinthisdocumentorfromtheuseofprograms
andsourcecodethatmayaccompanyit.Innoeventshallthe
publisherandtheauthorbeliableforanylossofprofitoranyother
commercialdamagecausedorallegedtohavebeencauseddirectly
orindirectlybythisdocument.
Contentsubjecttochangewithoutnotice.
PleasevisitTobiiConnectfor

Tobii Pro Glasses 3 User Manual v 1.18 3
Tableofcontents
1Introduction 6
1.1Intendeduse 6
1.2Documentation 7
1.3Symbolsusedinthisdocument 7
2Systemrequirements 8
2.1TobiiProGlasses3controllerapplicationrequirements 8
3Safety 9
3.1Generalprecautions 9
3.2Emergency 9
3.3Epilepsywarning 10
3.4Infraredwarning 10
3.5Childsafety 10
3.6Mechanicalshock 10
3.7Bending 10
3.8Donotopenordisassemble 11
3.9Connectors 11
3.10Headunitcable 11
3.11Environment 11
3.12Componentconnectionsafety 11
3.13Batterysafety 11
3.14Wirelesswarning 12
3.15Transportation 12
3.16Accessories 13
3.17Cleaning 13
3.18CaliforniaProposition65warnings 13
4OverviewofTobiiProGlasses3 14
4.1TobiiProGlasses3packages 14
4.2What’sinthebox 15
4.3Optionalaccessoriesandsoftware 17
4.4Systemcomponents 17
4.5Headunit 18
4.6Recordingunit 20
5TobiiProGlasses3controllerapplication 22
5.1StartTobiiProGlasses3controllerapplication 22
5.2TobiiProGlasses3controllerapplicationmenu 23
5.2.1Recordingmode 24
5.2.2Record 25
5.2.3Playrecordings 25
5.2.4Connectionguide 26
5.2.5Settings 27
5.2.6Createeventtemplates 27
5.2.7Feedback 28
6SetupTobiiProGlasses3 29
6.1Preparetheheadunit 29

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6.1.1Attachadifferentnosepad 29
6.1.2Removethenosepad 29
6.1.3PreparetheCorrectiveLenses(optional) 30
6.2Preparetherecordingunit 30
6.2.1Insert/removethebattery 30
6.2.2Chargethebatteryusingthestand-alonebatterycharger 31
6.2.3Batteryrecommendations 33
6.2.4ChargetherecordingunitbatteryusingtheUSBcable 34
6.2.5WorkingwithSDcards 34
6.2.6Connecttheheadunitcable 35
6.2.7UpdatetheTobiiProGlasses3firmware 36
6.3InstallandUpdateTobiiProGlasses3controllerapplication 37
6.3.1DownloadandinstallthecontrollerapplicationforWindowsandMac 37
6.3.2DownloadandinstallthecontrollerapplicationforAndroid 38
6.3.3Updatethecontrollerapplication 38
6.4ConnecttheTobiiProGlasses3system 39
6.4.1ConnectviaWi-Fi(AccessPoint) 39
6.4.2Connectusingacable(Direct) 40
6.4.3Connectusingarouter 41
7Recording 42
7.1BeforerecordingwiththeTobiiProGlasses3system 42
7.1.1Fittheheadunit 42
7.1.2Turntherecordingunitonandoff 43
7.2Makearecording 44
7.2.1Addanewparticipant 45
7.2.2Audiomode(mute/unmute) 46
7.3Exposuresettings 46
7.4Zoom 47
7.5Calibration 47
7.5.1Whatcalibrationdoes 48
7.5.2Calibrationwithtarget 48
7.5.3Troubleshootcalibration 50
7.5.4Calibrationwithouttarget 50
7.6Starttherecording 50
7.7Createeventswhilerecording 51
7.8Endtherecording 52
7.9Workwithrecordings 52
7.9.1Locateandplayarecording 52
7.9.2PlaybackfunctionsinthePlayRecordingsscreen 53
7.9.3Downloadarecording 54
7.9.4Createavideoclip 54
7.9.5Events 55
7.9.6Deletearecording 58
7.10Additionaloperations 58
7.10.1DisplaytheTobiiProGlasses3properties 58
7.10.2TobiiProGlasses3API 59
8Productcare 61
8.1Operationalenvironment 61

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8.2Transportation 61
8.3Storage 61
8.4Cleaning 61
8.5Disposaloftheeyetracker 62
8.6Limitationofliability 62
9TechnicalSpecifications 63
9.1Eyetracking 63
9.2Headunit 63
9.3Recordingunit 63
9.4CorrectiveLenses(optional) 64
10Complianceinformation 65
10.1EUCompliance 65
10.1.1CEstatement 65
10.1.2OtherEUdirectivesandregulations 65
10.2UKCAStatement 65
10.2.1OtherUKLegislation 66
10.3FCCinterferencestatement 66
10.3.1RFinformation 66
10.3.2ClassBDigitalDeviceNotice 66
10.4ISEDstatement 67
10.5NRTLlisted 67
10.6AustraliaandNewZealandcompliance 67
10.7Japancompliance 68
10.8Koreacompliance 68
10.9Safetycompliance 68
10.10EMCcompliance 69
10.11RadiofrequencyemissionandSARcompliance(wirelessmodel) 69
10.12RoHScompliance 70
10.13Wastedisposalandrecycling 70
AppendixACustomerCare,training,andwarranty 71
A1CustomerCare 71
A1.1Gethelp 71
A2Trainingandeducationservices 71
A3Warrantyinformation 71
AppendixBLimitationsandconsiderations 72
B1Intendeduse 72
B2Lightconditions 72
B3Eyelashes 72
B4Droopyeyelids 72
AppendixCSyncPort 73
C1Sync-out 73
C2Sync-in 73
AppendixDCalibrationtarget 74

Tobii Pro Glasses 3 User Manual v 1.18 6
1 Introduction
TobiiProGlasses3isdesignedtoenableeasy,precise,andefficientcollectionofeyetracking
datainawidevarietyofresearchscenarios.Thediscreet,ultra-lightweightdesignensuresnat-
uralbehaviorandresearchvalidityinbothqualitativeandquantitativesituations.Accuratedata
androbusteyetrackingcapabilitiescanbereliedoninuncontrolledsituationsandreal-world
environments.
ThisdocumentdescribeshowtousetheTobiiProGlasses3system,includingtheTobiiPro
Glasses3controllerapplication.
Figure1.TobiiProGlasses3
1.1 Intendeduse
TobiiProGlasses3isawearableeyetrackerforacademic,commercial,andindustrialusedto
capturetrulyobjectiveanddeepinsightsintohumanbehaviorinareal-worldenvironment.The
glassesaredesignedtocapturewhatthewearerisviewingwhileprovidingrobustandaccurate
eyetrackingdata.ThecompleteTobiiProGlasses3systemconsistsofaheadunit,arecording
unit,andtheTobiiProGlasses3controllerapplicationinstalledonanexternaldevice.
TheproductshouldonlybeusedasdescribedintheTobiiProGlasses3UserManual.Please
readtheUserManualandothersupplieddocumentationthoroughlybeforeusingtheproduct.
Thisproductiscontinuouslybeingdevelopedandrefined.VisitTobiiConnectforthemostrecent
specificationsforTobiiProGlasses3andforthelatestversionofthisdocument.

Tobii Pro Glasses 3 User Manual v 1.18 7
1.2 Documentation
FurtherdocumentationisavailableforviewinganddownloadonTobiiConnect.
ThefollowingdocumentationisavailableforTobiiProGlasses3:
lReleaseNotes
lTobiiProGlasses3ProductDescription
lTobiiProGlasses3UserManual
lTobiiProGlasses3FieldGuide
lTobiiProGlasses3DeveloperGuide
1.3 Symbolsusedinthisdocument
Threedifferentsymbolsareusedinthisdocument:

TheInformationsymbolmeanssomethingisimportantorneedsspecialattention.

TheTipsymboldenotesadditionalinformationthatcanmakeaprocessorfunction
easier.

TheWarningsymbolmeansthereisapossibleriskofharmifthewarningisignored.

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2 Systemrequirements
2.1 TobiiProGlasses3controllerapplicationrequirements

Operating
System
MicrosoftWindows macOS Android
Version Windows10or11 macOS13(Ven-
tura)
AndroidOS12or13
Processor
(CPU)
6thGenerationIntelCore™i5(Dual
core)orequivalent
6thGenerationIntel
Corei5(Dual
core)orequivalent
Snapdragon835or
equivalent
Memory 8GBRAM 8GBRAM 4GBRAM

TobiiProLabandothersoftwaremayhavedifferentrequirements.Readmoreabout
TobiiProLab.

Tobii Pro Glasses 3 User Manual v 1.18 9
3 Safety
3.1 Generalprecautions
UseofTobiiProGlasses3isdescribedintheTobiiProGlasses3UserManualand
mustbeusedaccordingtothemanufacturer’sinstructions.Connectinganyothercom-
ponenttothesystemorusingthecomponentsimproperlycancauseinjurytotheuser
ordamagetotheequipmentandisentirelyattheuser’srisk.
TobiiProGlasses3systemmustbefittedonthetestparticipantaccordingtoinstruc-
tionsintheUserManual.NeitherTobiiABnoritsagentsareliablefordamageorinjur-
iestoapersonortheirpropertyduetoawearableeyetrackerinanyconfiguration
beingdropped.Fittingtheglassesontoatestparticipantisentirelyattheuser’srisk.
TobiiProGlasses3systemiscomposedofseveralcomponentsasdescribedinthe
UserManualandshouldbeusedaccordingtomanufacturerinstructions.Connecting,
orbyothermeansusinganyothercomponentthanadvisedintheUserManualmay
damageorinjureaperson,theirproperty,orrecordeddata,andisentirelyattheuser’s
risk.
Theheadunitisequippedwithaheadstraptomounttheeyetrackerontothewearer’s
head.NeitherTobiiABnoritsagentsareliablefordamagesorinjuriestoaperson,or
theirpropertycausedbytheheadunitheadstrap.
3.2 Emergency
TobiiProGlasses3systemistobeusedfordatacollectionpurposesonly.Duetothe
low,butpossibleriskoffailureordistraction,thewearableeyetrackershouldnotbe
relieduponorusedindangerousorotherwisecriticalsituations.

Tobii Pro Glasses 3 User Manual v 1.18 10
3.3 Epilepsywarning
Somepeoplewithphotosensitiveepilepsyaresusceptibletoepilepticseizuresorloss
ofconsciousnesswhenexposedtocertainflashinglightsorlightpatternsineveryday
life.Thismayhappenevenifthepersonhasnomedicalhistoryofepilepsyorhas
neverhadanyepilepticseizures.
ApersonwithphotosensitiveepilepsyislikelytoexperiencesimilarproblemswithTV
screens,somearcadegames,andflickeringfluorescentbulbs.Thesepeoplemay
haveaseizurewhilewatchingcertainimagesorpatternsonamonitor,orevenwhen
exposedtothelightsourcesofaneyetracker.Itisestimatedthatabout3-5%of
peoplewithepilepsyhavethistypeofphotosensitiveepilepsy.Manypeoplewithpho-
tosensitiveepilepsyexperiencean"aura"orfeeloddsensationsbeforetheseizure
occurs.Iftheparticipantstartstofeeloddduringuse,havethemremovetheheadunit
immediately.
3.4 Infraredwarning
DonotusethesysteminthevicinityofdevicesthataresusceptibletoInfrared(IR)
light.Whenactivated,theheadunitemitsIRlight,whichcanaffectcertainmedicaland
otherdevicessusceptibletodisturbancebyIRlightand/orradiation.
3.5 Childsafety
TobiiProGlasses3isanadvancedsystemwithelectronicdevicesthatarecomposed
ofnumerousseparate,assembledparts.Inthehandsofachild,someoftheseparts
canbecomeseparatedfromthedevice,presentingapotentialchokinghazardorother
dangertothechild.Youngchildrenshouldneitherhaveaccesstonorusethedevice
withoutparentalorguardiansupervision.
3.6 Mechanicalshock
Thesystemisadelicatemeasuringinstrumentusedfordatacollectionpurposesand
shouldalwaysbehandledwithcare.Toavoidbreakingordamagingtheinternalelec-
troniccircuits,donotdrop,knock,orshakethedevice.Eyetrackingqualityoraccur-
acycanbeseriouslyaffectediftheheadorrecordingunitisdropped.Iftheeyetracker
isexposedtomechanicalshock,forexample,whendropped,donottrytostartit,or
connectittoapowersource.ContactTobiiCustomerCareforinstructions.
3.7 Bending
Toavoidbreakingordamagingtheinternalelectroniccircuits,donotbendanypartof
theeyetrackingsystem.Eyetrackingqualityoraccuracycanbeseriouslyaffectedif
theheadorrecordingunithasbeenbent.

Tobii Pro Glasses 3 User Manual v 1.18 11
3.8 Donotopenordisassemble
Donotopenordisassembletheheadorrecordingunit.Noncompliancewillresultin
lossofwarranty!Therearenouser-serviceablecomponentsinside.ContactTobiiCus-
tomerCareifyourwearableeyetrackerisnotworkingproperly.
3.9 Connectors
Theheadandrecordingunitsareequippedwithseveralexternalinterfaces(con-
nectors).Connectinganyotherdeviceorconnectorthanthoseintendedmaycause
personalinjuriesand/ordamagetheTobiiProGlasses3system.NeitherTobiiABnor
itsagentsareliableforanydamagesorinjuriestoapersonortheirpropertyowingto
connectingunintendeddevices.
3.10 Headunitcable
Theheadunitcableconnectedtotheheadunitmustonlybeusedtoconnecttothe
recordingunit.Donotusetheheadunitcableforanyotherpurposeorforconnecting
tootherdevices.NeitherTobiiABnoritsagentsareliableforanydamagesorinjuries
toapersonorpropertyowingtoincorrectuseoftheheadunitcable.
3.11 Environment
Avoidexposuretodirectsunlightasthiswillaffecteyetrackingqualityandcancause
theequipmenttooverheat.Avoidprolongedexposuretoliquids,gels,moisture,rain,
orsweat.Donotusetheeyetrackerunderwater.
Donotplaceorusetheequipmentinplacesthataresubjecttoextremetemperatures
orhumidity:suchasontopofandornearaheatingelement,inahotordamproom,or
inahotautomobile.Operatingtemperature:5°Cto+45°C/23°Fto113°F
3.12 Componentconnectionsafety
TherecordingunitisdesignedtoconnecttotheheatunitanddevicesrunningTobii
ProGlasses3controllerapplication.Therecordingunitshouldnotbeconnectedto
anyotherdevices.
3.13 Batterysafety
OnlyusebatteriessuppliedbyTobiiAB.
Thereisariskofexplosionifthebatteryisreplacedbyanincorrecttype.

Tobii Pro Glasses 3 User Manual v 1.18 12
Replacementofabatterywithanincorrecttypecandefeatsafeguards(forexample,in
thecaseofsomelithiumbatterytypes).
Disposalofabatteryinafireorahotoven,ormechanicallycrushingorcuttingofabat-
terycanresultinanexplosion.
Attention!
UtilisezuniquementlespilesfourniesparTobiiAB.
Risqued'explosionencasderemplacementdelapileparunepiledetypeincorrect.
Leremplacementd'unepileparunepiledetypeincorrectpeutneutraliserunsystème
desécurité(parexempledanslecasdecertainstypesdepilesaulithium).
Lamiseaurebutd'unepiledanslefeuoudansunfourchaud,ouparécrasementou
découpe,peutentraîneruneexplosion.
L'expositiond'unepileàunenvironnementprésentantunetempératureextrêmement
élevéepeutentraîneruneexplosionouunefuitedeliquideoudegazinflammable.
L'expositiond'unepileàunepressiond'airextrêmementfaiblepeutentraînerune
explosionouunefuitedeliquideoudegazinflammable.


3.14 Wirelesswarning
Therecordingunitcontainsradiotransmittersandreceivers(WLAN).Ensurethatitis
placedasfaraspossiblefromanyequipment,objects,orbodypartssensitivetosuch
signals.
電波法により5GHz帯は屋内使用に限ります。
3.15 Transportation
Usetheprovidedcasewhentravelingwiththeeyetracker.Forshippingandstorage,usetheori-
ginalpacking.
Fortransportation,therecommendedrangefortemperatureandhumidityforthedeviceisasfol-
lows:
lTemperature:-40°Cto65°C(-40°Fto149°F)
lHumidity:5%to95%
ETSI300019-2-2V2.4.1,T2.3(Publictransportation)withexceptionofhighairtem-
peratureat+65°C.

Tobii Pro Glasses 3 User Manual v 1.18 13
3.16 Accessories
OnlyuseaccessoriesprovidedbyorapprovedbyTobiiAB.


3.17 Cleaning
Avoidtouching,scratching,orsmudgingthelensesontheheadunitand/ortheCor-
rectiveLenses(optionalaccessory)andkeepallsurfacesclean.Eyetrackingquality
maydegradewhensurfacesaredustyordamaged.Takespecialcarethatno
smudgesorscratchescovertheilluminatorsorsensorsinthelensesasthiscanimpair
performance.
Donotusewindowcleaners,householdcleaners,aerosolsprays,solvents,alcohol,
ammonia,orabrasivesonanycomponentoftheTobiiProGlasses3system.
BeforecleaningtheTobiiProGlasses3system,unplugtheheadunitcable.
Usetheincludedcleaningclothtocleantheglasslensesgently.
Avoidgettingmoistureinopeningsandportsonthedevice.


3.18 CaliforniaProposition65warnings
WARNING:ThebatteriesinthisproductcanexposeyoutochemicalsincludingCar-
bon-BlackExtractsandNickel(Metallic),whichisknowntotheStateofCaliforniato
causecancer.Formoreinformation,visitP65Warnings.ca.gov.
WARNING:Therecordingunitinthisproductcanexposeyoutochemicalsincluding
Carbon-BlackExtractsandNickel(Metallic),whichisknowntotheStateofCalifornia
tocausecancer.Formoreinformation,visitP65Warnings.ca.gov.
WARNING:TheUSB-CtoGigabitEthernetAdapterinthisproductcanexposeyouto
chemicalsincludingLeadandBisphenolA(BPA),whichisknowntotheStateofCali-
forniatocausecancerandbirthdefectsorotherreproductiveharm.Formoreinform-
ation,visitP65Warnings.ca.gov.

Tobii Pro Glasses 3 User Manual v 1.18 14
4 OverviewofTobiiProGlasses3
CongratulationsonyourpurchaseofTobiiProGlasses3.They'recreatedwithactiveresearchers
inmindandgiveyouthefreedomtotakeyourresearchfurtherwithwidergazeanglesandcom-
prehensivedataonvisualattention.
4.1 TobiiProGlasses3packages

TobiiProGlasses3issoldinfourdifferentpackages.Thetablebelowdetailsthespecificfea-
turesavailableineachpackage.
Components
TobiiPro
Glasses
Cabled
50
TobiiPro
Glasses
Cabled
100
TobiiPro
Glasses
Wireless
50
TobiiPro
Glasses
Wireless
100
TobiiProGlasses3
controllerapplication
● ● ● ●
50Hz ● ●
100Hz ● ●
WLANfunctionality ● ●
Basicsupport ● ● ● ●

Tobii Pro Glasses 3 User Manual v 1.18 15
4.2 What’sinthebox
TobiiProGlasses3shipswithaconvenientcarryingcasewhichcontainsthefollowing:
Figure2.What'sinthebox

1.Recordingunit 6.Calibrationcard
2.Headunit 7.Cleaningcloth
3.Removablenosepads(4pcsintwodifferentsizes) 8.Headstrap
4.RechargeableLi-ionbatteries,type18650(3pcs) 9.Cableclip
5.SDcardswithcases(3pcs)

Tobii Pro Glasses 3 User Manual v 1.18 16
Thereisalsoanaccessoriesboxwhichcontainsthefollowingitems:

Figure3.What'sintheaccessoriesbox

1.BatterychargerforLi-ionbatteries 6.Ethernetcable(3meters)
2.EthernettoUSBType-Cadapter 7.SDcardtoUSBType-A
adapter
3.Standardand12Vpowercordsforthebatterycharger
(EU,US,UK,AUS)
8.Calibrationcards(2pcs)
4.USBchargerforrecordingunitandUSBType-Ato
microUSBadaptercable
9.Calibrationstickers(10pcs)
5.PoweradapterplugsfortheUSBcharger(EU,US,UK,
AUS)
SafetyandComplianceleaflet
(notpictured)


Tobii Pro Glasses 3 User Manual v 1.18 17
4.3 Optionalaccessoriesandsoftware
ThefollowingoptionalcomponentscanbeaddedtotheTobiiProGlasses3system.Learnmore
ontobii.com.

Component Description
Corrective
Lenses
Snap-oncorrectivelensesforTobiiProGlasses3usedwithpeoplewhowear
prescriptionlenses.TheCorrectiveLensesaccessoryforTobiiProGlasses3is
asetofattachablelensestocorrectbothnearsightednessandfarsightedness.
Thisaccessoryallowsyoutoincludealargercross-sectionofthepopulationin
yourresearch.
Protective
Lenses
Thisaccessorypackagecontainstwolenses,clearandtinted,toprotectTobii
ProGlasses3fromdamageinchallengingsituationsandtosupportresearchin
brightenvironments.
MotionCap-
tureMarker
Set
CombineTobiiProGlasses3withmotioncapturesystemsandstudythelinks
betweenattentionandmovement.

OptionalsoftwareforTobiiProGlasses3
TobiiProLab1TobiiProLabisacomprehensiveresearchsoftware
platformforeyetrackingdesignedtomeetthehighest
demandsondifferentresearchscenarioswithexact
timingaccuracy.Thissoftwareoffersanefficientwork-
flow,makingiteasytodesignexperiments,record
data,analyzeandvisualizeeyetrackingdata,andto
syncthisdatawithotherbiometricdatastreams.
Third-partysoftware ThistermreferstoanyapplicationbuiltonTobiiPro
SDK.
4.4 Systemcomponents
TheTobiiProGlasses3systemiscomprisedoftheheadunit,recordingunit,andTobiiPro
Glasses3controllerapplication.Eachcomponentisbrieflydescribedbelow.Inaddition,TobiiPro
Labsoftware(purchasedseparately)canbeusedforfurtheranalysisofeyetrackingdata.
TheTobiiProGlasses3system:
1. Theheadunit,comprisedofwearableeyetrackingglasses.
2. Arecordingunit,connectedtotheheadunitviaaheadunitcable.Therecordingunitholds
thebatteryandstorestherecordeddataonaSDcard.Therecordingunitiscontrolledfrom
adevicerunningTobiiProGlasses3controllerapplication.
1TobiiProLabmayhavedifferentsystemrequirementsthanTobiiProGlasses3controllerapplication.

Tobii Pro Glasses 3 User Manual v 1.18 18
3. TobiiProGlasses3controllerapplicationisusedtomanagetheparticipants,startandstop
recordings,aswellastoviewrealtimeandrecordedvideoandeyetrackingdata.
Thecontrollerapplicationisdesignedtobeinstalledandusedonspecificoper-
atingsystemsandprocessors.Theapplicationshouldnotbeinstalledonany
othertypeofdevices.
4. Acomputerrunningthespecifiedoperatingsystems;oranAndroiddevicerunningthespe-
cifiedversion;withTobiiProGlasses3controllerapplicationinstalled.SeeSystemrequire-
ments.
Thecontrollerapplicationconnectstotheeyetrackerthroughannetworkcon-
nection(eitherwirelessorwired).
5. TobiiProLab(purchasedseparately)installedonaWindowscomputer.Anyeyetracking
analysisbeyondqualitativeanalysisofeyetrackingsessionreplay,iscarriedoutusing
TobiiProLab.
ThecontrollerapplicationisdesignedtobeusedonlywithTobiiProGlasses3.
Noothertypeofeyetrackerscanorshouldbeusedtogetherwiththecontroller
application.
4.5 Headunit
Theheadunitisahighlysophisticatedmeasuringdevice.Itconsistsofseveralverysensitive
sensorsandmustbecaredforcorrectly.Formoreinformation,readProductcare.

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Theheadunitconsistsofthefollowingparts:
Figure4.Theheadunitor"glasses"

Part Description
1.Infraredilluminators(x8per
eye)
Illuminatestheeyestoassisttheeyetrackingsensors
2.Headunitcable Connectstotherecordingunittosavecollecteddata
3.High-definitionscenecam-
era
CapturesaFullHDvideoofwhatisinfrontoftheparticipant
4.Microphone Picksupsoundsfromtheparticipantandtheirimmediatesur-
roundings
5.Eyetrackingcameras(x2
pereye)
Recordseyeorientationandmovements

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Part Description
6.Accessoryattachment Usedtoattachsomeoftheoptionalaccessories,e.g.,thePro-
tectiveLens
7.Nosepad Additionalnosepadscanbeusedtochangesizing
4.6 Recordingunit
Therecordingunitisasmallcomputerthatcontrolstheheadunit.Itrecordsandstoreseye-track-
ingdata,sounds,andscenecameravideoonaremovableSDcard.Therecordingunitcarriesa
replaceableandrechargeableLi-ionbatterythatsuppliespowertoboththerecordingunitandthe
headunit.Therecordingunithasseveralconnectorsandapowerbuttonandiscontrolledfrom
TobiiProGlasses3controllerapplication.
Therecordingunitconsistsofthefollowingparts:
Figure5.Therecordingunit


Part Description
1.Headunitcon-
nector
Connectstotheheadunitcable
2.MicroUSBcon-
nector
ConnectstoUSBchargerforpoweringtheunitandchargingthebattery