How+do+keyless+cars+work+&+are+they+secure?

How do key-less cars work & are they secure? If you went car shopping in the last few years you will see a number of cars now come with the option of a keyless system. The odd part of these key-less system is you still get a key but it is just a remote control to lock/unlock the car it has no physical key you must put in the car to open it or start the engine.  How do they work though? Is it secure? Can someone walking by record your key number and then open your car using a generic transmitter?  The key fob (a small remote control sometimes with a backup manual key if the system does fail) has a radio chip in it, which the car can sense and communicate with. If the car does not sense the fob with your unique factory programmed code in it the engine will not start and the doors will not open. You may be thinking “What if they just scan my while I walk around? Will they have my special unique code?” The good news is security experts in the car industry thought of that and when you turn off your car a special secondary unique code is transmitted to the key fob. The car needs both the factory programmed code and the unique one time use code to start the engine or open the doors.  Every time you turn off the engine the code changes so the thief would never be able to scan your key fob, make a replica key fob, program it and access your car before the next time you drove your car.  Are you worried about the battery in the key fob dying? <span style="font-family: Arial,sans-serif;"> Do not worry, even if that happens the car can still program and read the chip inside the key fob to start and open the car you will just need new batteries to remotely unlock the car.