1. A system comprising: a media content processing subsystem configured to transmit to, communicate with, and receive a signal or data stream containing a media content instance from, a media content provider; and an input device comprising a plurality of control surfaces each configured to cause said input device to transmit at least one command to said processing subsystem; wherein said input device is configured to acquire an image of a fingerprint of a finger touching one of said control surfaces and cause said processing subsystem to execute a command corresponding to said one of said control surfaces in accordance with a user profile that corresponds to said acquired fingerprint image.