How does anti theft system work

I'm guessing that you want an answer that's more than just, it keeps the engine from running. So for detailed explanations, google this and you can read all about how car security systems work. You could even go to the Honda website and find details on how your specific system works.

Basically the vehicle's computer has to recognize the key or fob that's being used to try to start the vehicle. If it's not the correct key or fob the engine will refuse to crank, the ignition system, and fuel system will be disabled. An audible alarm may sound as well. Hope that helps! Jim