Proximity RFID Keyless Entry/Alarm???
 

I am trying to find a main stream keyless entry system like you fine on some of the high end imports.

Basically driver keeps FOB in pocket, when they are 15-20 feet away from the vehicle the doors lock and alarm arms. When they are within 15-20 feet of the vehicle the doors unlock and the alarm disables.

Anyone ever heard of or installed such a beast?

Something like this K-9 system, though I vaguely remember the K-9 name?

http://www.adelcom.net/K-9-sombra-Page.htm

Thanks