What is keyless entry?

It is so common these days you hardly notice it. You will see someone with a small device in their hands point it at a car and press it. There will usually be some kind of ‘beep’ sound and the car is ‘magically’ unlocked. It is easy and convenient, especially when you are carrying a load such as shopping. But you’ve also probably wondered hwo it works and how safe it is.

Keyless entry and your car

Keyless entry works because of a system devised in the 1980’s called ‘KeyLog’. It uses some 18 billion combinations to send a ‘message’ to your car that it then ‘recognises’, deactivating the locks. This system was thought to be impossible to crack by a combined team of Israeli and Belgian reseraches have managed to do just that. Although not quite a ‘how to’ for car thieves it does point out that the message between owner and car can now be decrypted.

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How does keyless entry work in your car?

Much like a TV remote control the keyless device sends a ‘pulse’ which must be within range of the car to be detected. When it is detected, it activates the car’s electronics which open the locks. More sophisticated systems exist which add extra coding and decoding of the signal, but that is essentially the basics.

What are the advantages of keyless entry in your car?

There are many advantages to having keyless entry, which may include

• Being able to open the car when your hands are full
• Greater personal safety, especially for women as the car can be open in advance without fumbling for keys
• Part of a greater range of security features
• Minimise scrape damage from keys

There is no doubt that keyless entry is convenient and here to stay. Although the system is no longer totally ‘hack proof’, it requires advanced technology and considerable effort to do so and everyday motorists should not be concerned. In conjunction with an engine immobiliser and other security features keyless entry makes good sense.