Hi, Between the RFID card in my wallet (backup on the coffee table) and the Tesla iPhone App, I realized my car could be easily stolen. The RFID card being the easiest. So I enabled the 'passcode' on the car. The initial problem was the screen. A little smudge, entering the code had problems just like earlier in the day attempts trying to blow-up the navigation display. Regardless, I entered the code. But trying to drive the car, I couldn't enter the code ... again due to the screen. So I grabbed a wad of kleenex, wiped the screen, and we're good to go. Bob Wilson