Wireless activation system, method and device

The wireless activation system, such as non-key vehicle access control system, a redundant code sequence (mk (400) and receiver device (200) are between sensing device. The is a sequence duration of the sensor device and receiver synchronous device, or the number of elements or piece is the change sequence, or through the change mechanism or a piece, a that is authorized the side detecting code sequence and relays the gain sequence to realize the activation for receiving device (200) with a been authorized is a difficult.