A method for actuating an access control transmitter in which a four code access transmitter is employed with the dimmer switch flashed once to produce a first signal, twice in rapid succession to produce a second signal, three times in rapid succession to produce a third signal, and four...http://www.google.de/patents/US5748101?utm_source=gb-gplus-sharePatent US5748101 - Concealed access entry system for a vehicle
