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Vehicle Smart Key Technology

The technology of smart keys in automobiles allows drivers to open and start their vehicle by simply touching the door handle or by putting the key into the pocket. It also enables a range of other adjustments, such as seats positions and temperature settings inside the car, stereo presets, and mirror positioning.

However, this could also lead to security concerns.

Security

Smart keys are computerized key fobs that communicate with the vehicle via an embedded antenna. This allows them to unlock doors and start the motor. Smart key fobs, unlike traditional keys, which emit the same frequency every time they're pressed, send encrypted signals that are only compatible with the car to which they belong to. This makes it difficult for tech-savvy criminals 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 that identifies the driver's key. When the Smart Key comes within 1.5 meters of a car, it automatically unlocks the tailgate and door, and the engine starts when a button on the key is press.

Certain smart key fob keys, such as the ones from BMW are also equipped with user-specific settings. These allow the driver to adjust the seat, mirrors and steering wheel's location and even audio preferences with the touch of a single button. They also have a backup lock, which prevents the vehicle from starting if the key is not in the ignition.

This technology prevents drivers from locking their vehicles, particularly when they have to search their purse or backpack to locate keys in a parking space filled with strangers or on a busy street with high rates of crime. Many systems also alert drivers when keys are running low on battery, but this feature is different for each manufacturer.

Convenience

The smart key is perfect for those who are trying to get to their destination. By pressing the button on your trunk release or door handle, you can unlock, lock and get into your vehicle. The key fob will also connect to your phone to track charging, location and other information about the vehicle, says Popular Mechanics.

The main benefit is that you aren't able to accidentally lock yourself out. The key fob communicates with an antenna inside the vehicle to determine if the key is in range. If it's not, the engine won't start. This is a deterrent to thieves who would steal your vehicle in order to sell the parts.

BMW reports that the smart key uses rolling codes as well to stop cloning and hacking. The computer inside the vehicle reads the code and confirms it before starting the engine. Many systems also have a backup mechanical system that is an unnoticed key blade to be used for styling purposes.

How Stuff Works Electronics notes that modern smart keys can also detect the keys used and adjust the car settings accordingly. If you turn on the vehicle while holding the key in your palm, for example windows and the sunroof will open to allow air circulation to the interior. You can also set the speed limit to only be applicable when the vehicle is started using the chosen key, which could be useful if you loan your car to a novice driver.

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 from sending or receiving any radio signals which will increase its battery's life by a significant amount. You can always reactivate this function by pressing the unlock and lock buttons once more.

Certain smart keys have anti-theft functions that prevent them being copied by thieves. Mercedes-Benz smart keys employ rolling codes to stop unauthorized access. The computer in the car is able to verify the code within milliseconds following the smart car key reprogramming key is put in. BMW utilizes a Display Key that has a tiny LCD color screen. This allows drivers to lock their cars, open them, and start them without removing the smart car key replacement car key programming (a cool way to improve) key from their pocket.

If you're thinking of buying an automobile with a smart key, or you need the battery in your smart key replaced, call Pop-A-Lock for a fast and easy service. Our mobile locksmiths will change the battery on any smart key and assist to set it so that your car can recognize it.

Special Cases

While smart keys aren't theft-proof, they do help to hinder thieves. Smart keys are designed to deter hackers from gaining access to the system. When they are inserted into the ignition of the vehicle The computer confirms the code in milliseconds. Mercedes-Benz invented this technology, which is now used by luxury car brands.

Another helpful feature is that the majority of smart key systems will continue to operate in the event that the user forgets the key in the trunk or left it at the restaurant, or lost it on a hike. Certain systems will notify the driver when the battery is depleted. Certain brands also offer key covers specifically designed for smart keys. They keep the fob protected from damage.