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Vehicle Smart Key Technology

The technology of smart keys in vehicles lets drivers unlock and start their vehicle by simply pressing the door handle or putting the keys in the pocket. It also enables a range of other adjustments, including seats positions and temperature settings inside the car, mirror position and stereo presets.

This can also cause security worries.

Security

Smart keys are computerized key fobs which communicate with the vehicle through an embedded antenna to unlock doors and start the motor. Smart keys, unlike traditional keys, which emit the same frequency each time they're used, transmit encrypted signals which are only compatible with the vehicle to which they belong. This makes it difficult for criminals with a technological edge to detect or spoof the signal, and use your key to steal your vehicle.

For instance, Mercedes' system -- called Keyless Go -- has an internal transponder, which identifies the driver's keys. When the Smart Key comes within 1.5 meters of a vehicle, it automatically unlocks the tailgate and door and starts the engine when the key's button is pressed.

Additionally, some smart keys -- like those from BMW include individual user settings that allow the driver to adjust the mirrors, seat and the steering wheel's position as well as audio preferences with the click of the button. They also come with a backup lock that prevents the vehicle from starting without the key.

This technology stops drivers from accidentally locking their vehicles particularly when they are searching bags or purses to find keys in the parking lot of strangers or on a busy street where crime is high. Some systems will also notify motorists when the battery for their key is low, though this feature may differ from manufacturer to the manufacturer.

Convenience

The smart car key programmer key is perfect for those on the move and need to get to their destination. You can unlock, lock and start your car by pressing the door handle or trunk release. Key fobs can also communicate with your smartphone to keep track of charging and location as well as other information about the vehicle, explains Popular Mechanics.

A major benefit is that you won't accidentally be locked out. The key fob communicates with an antenna in the vehicle to determine if the key is in range. If it's not, the engine will not start. This will stop thieves from taking your vehicle and then selling parts of it.

BMW reports that the smart key employs rolling codes in order to prevent hacking and cloning. A computer in the vehicle reads the code and confirms it before starting the engine. Most systems have a mechanical backup system that is a hidden key blade.

How Stuff Works Electronics notes that modern smart keys can also detect the key in use and adjust vehicle settings according to the situation. If you turn on the vehicle while holding the key in your hands, for example windows and sunroof will open to allow air circulation to the interior. You can also set up a speed limit that will only be used when the car is powered by the chosen key. This feature is beneficial if you're lending your car to someone with no experience.

Battery Life

If you're looking for a way to get more mileage out of your vehicle's smart key, or just want to make sure it won't die during a trip to the grocery store, you can activate an auto manufacturer-specific feature called Power Saving Mode. To do this you need to press and hold the lock button while pressing the unlock button.

This will stop your smart key fob's smart chip from sending or receiving radio waves that could extend its battery life significantly. You can reactivate this function by pressing the unlock and lock buttons once more.

Certain smart keys also have anti-theft functions that stop them from being copied by thieves. For instance, Mercedes-Benz smart keys use rolling codes to block unauthorised access to the vehicle. The car's computer checks the code milliseconds after the smart car replacement key key is introduced. BMW utilizes a Display Key that has a tiny LCD color screen. This lets drivers lock their vehicles, unlock them, and then start them without having to remove the smart key from their pocket.

Contact Pop-Alock if you need to replace the battery in your smart key for car key fob, or considering purchasing a car that has a smart-key. Our mobile locksmiths can change the battery on any smart key and help to set it up so that your car can recognize it.

Special Cases

Although smart keys aren't theft-proof, they do help to stop thieves. Smart key fobs are designed to prevent hackers from hacking the system. When they are inserted into the ignition of the car the computer validates the code in milliseconds. Mercedes-Benz invented this technology, which is currently used by luxury car manufacturers.

Another benefit is that most smart key systems will continue to function in the event that the user forgets the key in the trunk or left it at the restaurant or if it is lost on hiking. Some systems will also notify the driver if the battery is running low. Certain brands have key covers designed specifically for smart keys to guard the fob from damage.