01193nas a2200157 4500008004100000020001500041245002600056210002200082520079100104100001900895700001800914700001800932700001500950700001900965856005100984 2002 eng d a158113454100aThe sound of one hand0 asound of one hand3 a

Two hundred and fifty years ago the Japanese Zen master Hakuin asked the question, "What is the Sound of the Single Hand?" This koan has long served as an aid to meditation but it also describes our new interaction techinique. We discovered that gentle fingertip gestures such as tapping, rubbing, and flicking make quiet sounds that travel by bone conduction throughout the hand. A small wristband-mounted contact microphone can reliably and inexpensively sense these sounds. We harnessed this "sound in the hand" phenomenon to build a wristband-mounted bio-acoustic fingertip gesture interface. The bio-acoustic interface recognizes some common gestures that state-of-the-art glove and image-processing techniques capture but in a smaller, mobile package.

1 aTerveen, Loren1 aWixon, Dennis1 aAmento, Brian1 aHill, Will1 aTerveen, Loren uhttp://portal.acm.org/citation.cfm?doid=506443