Measuring Visual Attentiveness: Eye Tracking on Wearable Devices
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Transcript of Measuring Visual Attentiveness: Eye Tracking on Wearable Devices
Keeping an Eye on WearablesUsing Eye Tracking to Measure the User Experience of Wearable Technology
Andrew Schall, Principal ResearcherKey Lime Interactive
@AndrewSchall
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
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
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.
Measuring Engagement LevelsNumber of times they visually attend to and interact with each screen.
1x4x3x2x 2x
12x in 5 minutes
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?
“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
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
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