Car Keyless entry

Key less entry is gaining popularity among luxury cars these days. Toyota cars are equipped with keyless entry. In some luxury cars there is no key at all. The driver will carry a small RF device which will transmit a beacon. The receiver in the car can detect this beacon. The receiver is capable of determining the distance of the rf key. The security systems of the car will be deactivated only if the RF key is within a certain distance from the vehicle. Old systems used plain RF communication to make this possible.

But car thief’s became smarter and they started hacking those systems. The next generation featured encoded signals, but they were also not very helpful. Now most of the systems are hybrid ones which cannot be hacked very easily. Modern keyless entry systems feature bluetooth, zigbee etc which can be controlled from mobile phones also.