Subtle and Personal Workspace Requirements for Visual Search Tasks on Public Displays
summary
A lab study on a 170-inch, 4x2 HD public display uses a Where’s Waldo visual search with 21 students and logged workspace size and stance. Results show two consistent strategies: minimizers create a small, close about 60 cm square workspace and pan-and-scan with touch; maximizers make a roughly 100×80 cm area, step back and search visually. Aspect ratio has little effect, and a practical rule emerges: subtle interactions need about twice the screen real-estate of personal ones.
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