User-defined gestures for free-hand TV control

As researchers and industry alike are proposing TV interfaces that use gestures in their designs, understanding users' preferences for gesture commands becomes an important problem. However, no rules or guidelines currently exist to assist designers and practitioners of such interfaces. The paper presents the results of the first study investigating users' preferences for free-hand gestures when controlling the TV set. By conducting an agreement analysis on user-elicited gestures, a set of gesture commands is proposed for basic TV control tasks. Also, guidelines and recommendations issued from observed user behavior are provided to assist practitioners interested in prototyping free-hand gestural designs for the interactive TV.