The "Bar of Soap": Grasp-Based Interfaces

We have built several handheld devices that combine grasp and orientation sensing with pattern recognition in order to provide highly intelligent user interfaces. The Bar of Soap is a handheld device that senses the pattern of touch and orientation when it is held, and reconfigures to become one of a variety of devices, such as a phone, camera, remote control, PDA, or game machine. Pattern-recognition techniques allow the device to infer the user's intention based on grasp. Another example is a baseball that determines a user's pitching style as an input to a video game.