The present invention, according to a preferred embodiment, is directed to portable electronic devices which operate on exhaustible power sources, for example, batteries. The electronic devices of the present invention comprise at least one signal switch and a microchip in communication with the switch...http://www.google.ca/patents/US7443101?utm_source=gb-gplus-sharePatent US7443101 - Intelligent electrical switching device including a touch sensor switch
Intelligent electrical switching device including a touch sensor switch
