DATA - AUTO CPN

Modern Security
Inside the car controller
Inside the car controller
With the remote keyless-entry systems that you find on cars today, security is a big issue. If people could easily open other people's cars in a crowded parking lot at the mall, it would be a real problem. And with the proliferation of radio scanners, you also need to prevent people from "capturing" the code that your transmitter sends. Once they have your code, they can simply re-transmit it to open your car.

The photo below shows you the guts of a typical key-ring controller for a modern car:

DATA - AUTO CPN