Patent ID: 8660532

Claim:
A user authentication method for access to a mobile user terminal, said mobile terminal including one or more movement sensor supplying information on movements of said mobile terminal, said method comprising: authenticating a user on the basis of a movement performed handling said mobile terminal; acquiring in a measuring phase a test pattern (t x ) of values sensed by one or more movement sensor related to a movement performed in a predetermined condition corresponding to an action for operating said mobile terminal; comparing in a biometric recognition phase said acquired test pattern to a stored pattern of values obtained from said one or more movement sensor by a training phase executed by an accepted user performing said action for operating said mobile terminal, said comparing including measuring a similarity of said acquired test pattern to said stored pattern; obtaining an authentication result by comparing said measured similarity to a threshold; and wherein said operation of acquiring a test pattern of values sensed by one or more movement sensor includes acquiring values of information on accelerations sensed by an accelerometer sensor and information on the orientation in space of said mobile user terminal by an orientation sensor to obtain respective time series of accelerations and orientations.