The SIM card ( Subscriber Identity Module) in cell phones provide the same function.

FORBES: Leveraging TPM

The design and engineering teams have collaborated on a visual identity that is distinct but discreet, with a motorized tilt function that directs the sound where you want it when the speakers are on, then retreats to flush when no longer needed.

ENGADGET: Bang & Olufsen launches BeoLab 15 in-wall speakers for stealthier beats (update: ears-on)