The disclosed technology is a secure-cell apparatus for releasably securely associating a device, such as a cellular phone, with a device user. The device is configured to clamp to a support structure such as a strap, belt, seatbelt, and suspenders. The secure-cell apparatus my further define a zone for storing items such as keys, cards, IDs, etc. Such “zone” may further define a personality interface configured to receive a personality module. Personality modules are in electrical communication with an electronic device associated with the secure-cell apparatus and may add additional functionality to such electronic device.