TRIGGERING APPLICATION ACTION USING NON-STANDARD CONTROLS

摘要

A lock button of a mobile device with an iOS operating system, to be used by a user to effect an action when the mobile device is in the locked state, is enabled for other functions by executing an application on the mobile device. When the mobile device is in a locked state, the application is in a dormant mode. The OS of the mobile device monitors for a change of location of the device and/or for the receipt of a short range wireless data signal. Upon detecting either, the operating system communicates this to the application which in response enters a background mode and monitors the on/off state of a screen of the mobile device. If the screen state changes at least twice within a predetermined period of time, the application effects an action, such as sending a panic signal.