MOBILE ELECTRONIC DEVICE WITH MOTION DETECTION AUTHENTICATION

摘要

A mobile electronic device which may prompt a user to authenticate to the mobile electronic device by drawing a graphic symbol, such as a signature, using the mobile electronic device. An acceleration module generates an acceleration signal representing user motion of the mobile electronic device. A lock circuit for enables operation of a function of the mobile electronic device in response to the acceleration signal indicating that the user motion deviates from reference motion data by no more than a predetermined threshold.