1. A proximity sensor device, the proximity sensor device comprising: a sensor, the sensor adapted to detect object motion proximate a sensing region; and a processor, the processor coupled to the sensor, the processor adapted to: distinguish between detected motion of a first object combination and detected motion of a second object combination; indicate a first result responsive to detected motion of the first object combination; indicate a second result responsive to detected motion of the second object combination, the second result different from the first result; and indicate a third result responsive to detected motion of the first object combination following the detected motion of the second object combination, the third result different from first result and the second result.