1.4 Creating/selecting a participant
Before
you
start
a
recording,
you
create
or
select
the
participant
as
outlined
below.
You
find
more
details
in
the
,
section
7.2.2.
1.
Make sure the correct study is open in Controller.
2.
Open the Dashboard via the Menu bar.
3.
Check that the Control Panel of the recording unit displays "Ready".
4.
Tap Start New Recording on the Control Panel.
•
If you use multiple pairs of Glasses 2, check that the correct recording unit is selected.
5.
Create a new participant or select an existing participant.
a.
Create a new participant by entering the participant’s name in the participant field and the participant details in the
participant info field. Tap Create.
b.
Select an existing participant by tapping Existing Participant. Select the appropriate participant from the list.
1.5 Calibrating the participant
The
calibration
is
also
outlined
in
the
sections
7.5.1.2
and
7.1.5.3.
You
ensure
that
you
collect
accurate
eye
tracking
data
by
for
each
participant.
During
calibration,
the
participant
must
wear
the
head
unit
while
focusing
on
the
center
of
the
calibration
target.
The
calibration
target
is
printed
on
the
supplied
calibration
cards
and
calibration
stickers,
and
in
Appendix
D
of
the
.
You cannot reuse the calibration for a participant.
1.
Find the right spot for calibration (avoid light interference and sun exposure).
2.
Adjust the position of the Pro Glasses 2 and determine the right
for the participant.
3.
Position the calibration target about one meter from the participant, for example in front of a white wall. Don’t position
the target in front of a screen or the Live View.
4.
Check that the participant looks at the center of the calibration target and that the calibration target appears in the scene
camera live view video in Controller.
5.
When the participant looks at the calibration target, tap the Calibrate icon in the bottom right hand corner of the live view
window. Animated graphics illustrate the progress of the calibration.
6.
After successfully calibrating your participant, always verify the calibration.
a.
Instruct the participant to look at a few objects suggested by you, for example the calibration target or the numbers
on a clock.
b.
Use the live view video to verify that eye tracking data is sufficiently accurate for your study.
7.
If eye tracking accuracy is acceptable, proceed to the next step. If not, tap Recalibrate and repeat the calibration
process.
You can use the
to position the Pro Glasses 2 correctly on your participant. Details on how to interpret the eye im-
ages can be found
.
4
1 Tobii Pro Glasses 2: best practices
Tobii Pro Glasses 2 Best Practices Guide v.1.0.2 - en-US
