Patent ID: 8058969
Filing Date: 2011-11-15
Classification: G07C,H04M

Abstract:
1. A method for transforming the status of an electronic device keypad from a locked state to an unlocked state, comprising: detecting an engagement of the device keypad through pressure or displacement sensing, wherein the device keypad includes physically depressible keys, and wherein the engagement of the device keypad includes a key depression of a key; detecting the same engagement of the device keypad through bio-presence sensing; and measuring a time period from when the engagement of the device keypad through pressure or displacement sensing is detected, to when the same engagement of the device keypad through bio-presence sensing is detected; based on measuring the time period, determining that the device keypad is engaged by human touch when the time period is less than an allotted time period; upon determining that the device keypad is engaged by human touch, changing the status of the electronic device keypad from a locked state to an unlocked state.