Keeping an Eye on Wearables Using Eye Tracking to Measure the User Experience of Wearable Technology Andrew Schall, Principal Researcher Key Lime Interactive @AndrewSchall
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Keeping an Eye on WearablesUsing Eye Tracking to Measure the User Experience of Wearable Technology
Andrew Schall, Principal ResearcherKey Lime Interactive
@AndrewSchall
CAUTIONPotentially uncharted territory ahead
Wearbles are fun and cool, but aren’t always useful or usable.
@AndrewSchall
How do we measure the UX of wearable devices?
Would you use this to perform surgery?
Eye tracking provides insights that are used to fine tune an experience.
SELF REPORT• Satisfaction ratings• Difficulty ratings• Think-aloud protocol
OBSERVATIONAL• First click• Task performance• Time on task• Interaction behavior
PHYSIOLOGICAL• Eye movements• Electrodermal
activity (EDA)• Pupil dilation
FixationA single instance of where the eye momentarily stops
SaccadeThe rapid eye movement from one fixation to the next
Scan pathA series of sequential fixations and saccades
Eye Tracking Terminology
Fixation
Margin of error
MeasuringGlanceability
Adjective, Digital Technology.
Noting or relating to information on an electronic screen that can be understood quickly or at a glance.
Glanceable
Source: Dictionary.com
Hours Minutes Seconds
Video courtesy of Fitbit
Video courtesy of Pebble
If the information is not glanceable, it doesn’t belong on a wearable.
@AndrewSchall
Measuring Glanceability
Number of fixationsNumber of times they looked at the screen.
Individual fixation durationAmount of time they looked at each element.
Total glance durationTotal amount of time spent looking at the screen.
Good Glanceability
Poor Glanceability
Measuring Glanceability
15s5s3x
6s3s2x
25s3s10x
MeasuringEngagement
Visual attentiveness is the key to successful wearable engagement.
@AndrewSchall
Measuring Engagement LevelsNumber of times they visually attend to and interact with each screen.
1x4x3x2x 2x
12x in 5 minutes
Insert eye tracking wearable pilot videos
Real World Mapping
Benchmarking Wearable UX
§ What is a typical amount of time that users look at a smart watch display?
§ How frequently does a user glance at the display in a given period of time?
§ What percent of time does the user spend passively lookingat a display vs. actively interacting with it?
§ How long does it take users to notice and visually attend to a notification on their smart watch?
§ How much time does a user require to look at a smart watch display before they can commit to memory what they saw?
REAL WORLD TRACKINGHow do we evaluate wearable experiences outside the lab?
“Too often, there are subtle nuances embedded in an app that require hours of meticulous playing just to figure out how to do something.”
TIP to programmers. Don't design service and hospitality apps like adventure strategy games.”
- iTunes Customer Review for Alaska Airlines Smartwatch App
@AndrewSchall
1 2
3 4
Eye Tracking Glasses
• Total freedom of movement• Highly portable• Better for qualitative
PROS
• Labor intensive data analysis• Battery limitations• Can’t wear prescription glasses
CONS
Optimizing the UX of Wearables
Designing for glanceability§ Fewer fixations§Shorter fixations§Minimal overall fixation duration
Designing for visual attentiveness§ Increased number of glance instances§ Increased amount of interactivity
Looking for a few good research partners
The Book
Eye Tracking in User Experience Design
Real-world examples from over twenty leading UX professionals
Actionable findings and recommendations based on eye tracking research
Insights into cutting-edge applications of eye tracking, including use in social media, mobile, gaming, e-commerce, and emotional design
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Q & AWhat questions do you have about wearables & eye tracking?
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