The tactile input device is a user interface selection device used to transmit user information to a user interface interpretation module. The tactile input device allows a user to activate and operate applications running on a computing system through a single user interface selection device. The tactile...http://www.google.de/patents/US6967642?utm_source=gb-gplus-sharePatent US6967642 - Input device with pattern and tactile feedback for computer input and control
