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Vehicle Smart Key Technology

The smart key technology that is found in vehicles allows drivers to unlock and start their car by simply touching the door handle or by putting the key into the pocket. It also allows for various other adjustments such as the position of the seat and internal temperature settings as well as mirror positioning.

This could also create security issues.

Security

Smart keys are advanced computerized key fobs that communicate with a vehicle via one of the antennas built into the car to unlock doors and start the engine. As opposed to traditional keys, which emit the same frequency signal each time they are activated, smart keys transmit encrypted signals that are specific to the specific car they belong to. This makes it difficult for tech-savvy thieves to spoof or intercept the signal and use the key to steal your car.

Mercedes' Keyless Go system for instance, has an internal transponder, which can identify the key of the driver. When the Smart Key comes within 1.5 meters of a car it instantly unlocks the door and tailgate and the engine will start when the key's button is pressed.

Furthermore some smart keyssuch as those from BMW -- have individual user settings that allow the driver to adjust seat, mirrors and the steering wheel's position as well as audio preferences at the touch of a button. They also have a backup lock that prevents the vehicle from starting if the key is not in the ignition.

This technology helps drivers avoid not locking their cars properly especially when looking in backpacks or purses for keys on the parking lot of strangers or on a busy street where crime is high. Some systems also notify drivers when the key is not fully charged, however this feature varies by manufacturer.

Convenience

The Smart car Key programming key is perfect for those who are in a rush to get somewhere. You can lock, unlock and start your car by pressing the door handle or the trunk release. The key fob will communicate with your smartphone to track charging, location and other information about the vehicle, says Popular Mechanics.

A big benefit is that you won't accidentally lose your keys. The key fob communicates with an antenna inside the vehicle to determine if it's within range. If it's not, the engine will not start. This will stop thieves from stealing your vehicle and selling parts of it.

BMW reports that the smart key makes use of rolling codes, as well as to stop cloning and hacking. A computer in the vehicle recognizes the code and verifies it prior to starting the engine. Most systems have a physical backup in the form of an invisible key blade.

Modern smart keys also detect the key that is being used and adjust the car settings in accordance with the key's use, according to How Stuff Works Electronics. If you start 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 the speed limit to only apply when the vehicle is started using the chosen key, a feature that can be useful when loaning your car to a new 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 make sure you press and hold the lock button while pressing the unlock button.

This will prevent your smart key fob's smart device from being able to send or receive any radio waves. This will greatly extend the battery's life. It is possible to reactivate the function by pressing both the lock and unlock buttons again.

Certain smart keys have anti-theft functions that prevent them being copied by thieves. For instance, Mercedes-Benz smart keys use rolling codes to prevent unauthorized vehicle access. The car's computer will check the code every millisecond after the smart key is inserted. BMW offers a similar system with its Display Key, which features a small LCD color touchscreen on the smart key for ease of use, and allows drivers to lock or unlock their vehicles without ever taking it from their pockets.

If you're considering buying a new car that has a smart key, or require the battery of your smart key fob replaced, call us at Pop-Alock for a quick and simple service. Our mobile locksmiths will replace the battery on any smart key programing key and also help to set it so that your car can recognize it.

Special Cases

smart forfour key replacement keys are not 100% theft-proof but they can aid in deterring thieves. Smart keys use rolling security codes to avoid hacking, and when placed in the ignition, the vehicle's computer checks the code in milliseconds. Mercedes-Benz invented this technology, which is now utilized by luxury car brands.

A smart key system will continue to work even if it is not possible to remember the key in the trunk or leave it in a restaurant. Certain systems will also notify the driver if the battery is depleted. Certain brands provide key covers specifically designed for smart keys to guard the fob from damage.