A device is mounted on a law enforcement vehicle and is deployed by a law enforcement officer after the officer has pulled the law enforcement vehicle up behind a vehicle being stopped. The transmitting apparatus may convert multi-dimensional data to a plurality of stream data by mapping the multi-dimensional data to a complex number plane, and may transmit the plurality of stream data by mapping the plurality of stream data to dimensions divided based on a time and a space, respectively. The elastic member has at least a protrusion contacting at least the first rotating member surface.