Patent ID: 8205079

Claim:
A computing system for encryption/decryption files stored in an electronic device, the computing system comprising: a displaying unit used for displaying icons representing files; an operating unit used for selecting a desired file to be encrypted or decrypted; a pressure sensing unit integrated on the operating unit and comprising: a sensor used for sensing a pressure applied on the operating unit to produce a signal corresponding to the pressure; and an analog/digital convertor configured for converting the signal corresponding to the pressure into a digital pressure signal; an indicating unit integrated on the operating unit, and used for receiving the digital pressure signal converted from the pressure sensing unit, emitting a sensible signal according to the signal associated to a sensed pressure, and recording a signal associated to the sensed pressure and a duration of the sensed pressure as an encryption code or decryption code for encrypting or decrypting the desired file; and at least one processor for executing programs associated with at least one of the display unit, the operating unit, the pressure sensing unit, and the indicating unit.