1. A mobile device, comprising: a mobile communication component that communicates over a mobile communication network; an authentication module that automatically detects whether a separate, proximity-based authentication component is within a predefined proximity of the authentication module and, in response to detecting that the separate, proximity-based authentication component is within the predefined proximity, the authentication module automatically unlocking a secured area of the mobile device, the authentication module, in response to detecting that the separate, proximity-based authentication component is outside of the predefined proximity, automatically locking the secured area of the mobile device; and a processor, being a functional part of the mobile device and activated by the mobile communication component and the authentication module to facilitate communication, detection, locking and unlocking.