We sold & installed a Compustar RPS Touch Sensor in a Subaru Outback 2013. Do you ever worry about locking yourself out of your vehicle. The FT-RPS Touch, a window-mounted capacitive keypad that gives users keyless access to their vehicle. The CompuStar FT-RPS Touch is a multipurpose security sensor that mounts on the inside of the vehicle’s window. By entering a 4-digit customizable pass-code, users can lock/arm and unlock/disarm their vehicle’s alarm system. The RPS Touch utilizes five built-in blue LED’s, which act as a security deterrent when the vehicle is armed or locked.