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Uploaded on Feb 9, 2015
We explored eyes-free gesture interactions on palms, which enables users to interact with devices by drawing stroke gestures on palms without looking at palms. In two 24-person user studies, our findings are as follows: (1) Users preferred using the whole palm region as the gesture interface with 3 categories of hand orientations. (2) Users tended to draw different gestures from the same start region due to proprioception on palms. (3) The accuracy of eyes-free Graffiti input and multi-stroke gesture recognizer on palm interface reached as high as 98% and 95% respectively. (4) Users can draw more precisely on palms than on other surfaces or in the air. To explore and demonstrate the feasibility of the interaction, we implemented EyeWrist prototype, which embeds a micro camera and an infrared laser line generator on the wristband, and proposed two new interaction techniques that takes advantages of palm characteristics.