Patent ID: 6871242

Claim:
A personal computer comprising: a memory; an input device; a processor connected to the memory and the input device for receiving inputs from the input device; a biometric sensing system for controlling access to the personal computer processor and memory, said biometric sensing system including a first biometric sensor for receiving a personal input and identifying the individual, at least one additional sensor adjacent to the biometric sensor for determining whether the personal input is from a living person and a cover for protecting the biometric sensor and the at least one additional sensor from environmental forces when the sensor is not in use, wherein the at least one additional sensor is positioned so close to the biometric sensor that an individual making an input at the biometric sensor prevents an other from providing an input at the additional sensor, and wherein the at least one additional sensor for determining whether the input is from a living person includes an oxygen sensing mechanism which provides an output which distinguishes living from dead.