A multimodal electronic device (100) includes a shutter enabled dynamic keypad for presenting one of a plurality of keypad configurations to a user. Each keypad configuration, which is presented by an optical shutter (204) that opens or closes windows or shutters that are geometrically configured as...http://www.google.ca/patents/US20080291169?utm_source=gb-gplus-sharePatent US20080291169 - Multimodal Adaptive User Interface for a Portable Electronic Device
