Patent ID: 8260262

Claim:
A unitary mobile apparatus for authentication comprising: a single short wireless transceiver, wherein said unitary mobile apparatus can pair with a second device within proximity; at least one onboard biometric sensor means capable of capturing biometric information corresponding to a user expression selected from the group consisting of: voice, movement in two-dimensional space, movement in three-dimensional space, a fingerprint; a memory for storing two or more reference data sets corresponding to two or more expressions of a user, wherein said two or more reference data sets are identified by two or more reference codes; wherein upon receiving a first message from said paired second device, wherein said first message identifies a first reference code corresponding to a first challenge question, capturing user biometric information using said onboard biometric sensor means, using an onboard processor to authenticate the captured biometric information using a first reference data set corresponding to said first reference code, wherein upon receiving a second message identifying a second reference code corresponding to a second challenge question, wherein said second challenge question is different from said first challenge question, authenticating the captured biometric information using a second reference data set corresponding to said second reference code; wherein said unitary mobile apparatus fits within a volume smaller than 20 cm3.