1. A method of image capture comprising: configuring an image capture device in a learning mode for sensing at least one variable in the area surrounding the device and defining a normal state of the at least one variable comprising the steps of; setting a predetermined initial sensitivity threshold for the at least one variable; sensing the at least one variable in the area surrounding the device over a predefined period of time; developing a time-dependent profile of the at least one variable in the area surrounding the device; setting a new sensitivity threshold of the at least one variable in the normal state according to the time-dependent profile; initiating image capture upon detecting a transition of the at least one variable from the normal state to a new condition, wherein the transition exceeds the new sensitivity threshold level.