1. A system, comprising: at least one sensor configured to determine at least one of a position or movement of the system; and circuitry in communication with the at least one sensor configured to: identify at least one behavior associated with the at least one sensor; generate at least one timestamp associated with the at least one behavior, the at least one timestamp being associated with a time of day; generate a user signature corresponding to a user based at least in part upon the at least one behavior and the at least one timestamp; and store the user signature in a memory accessible to the system.