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Vehicle Smart Key Technology The technology of smart keys in vehicles enables drivers to unlock and start their vehicle by just touching the door handle or placing the key into the pocket. It also allows a variety of other adjustments, like seating positions as well as internal temperature settings stereo presets, and mirror positioning. However, this could also cause security issues. Security Smart keys are computerized key fobs that communicate with the vehicle using one of the antennas in the car to open doors and to start the engine. Unlike conventional keys, which emit the same frequency signal each time they are press, smart key fobs transmit encrypted signals that are only compatible with the specific car they belong to. This makes it harder for thieves who are tech-savvy to fake or intercept the signal and use the key to steal your car. For example, Mercedes' system — called Keyless Go — has an internal transponder, which identifies the driver's key. 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. Some smart keys, like those from BMW are also equipped with user-specific settings that allow drivers to alter the seat, mirrors and steering wheel's location and audio preferences at the press of a single button. They also come with an emergency lock that stops the vehicle starting without the key. This technology helps keep drivers from accidentally locking their car, especially when they have to search their purse or backpack to locate keys in a parking area packed with people or on a busy street with high crime rates. Many systems also alert drivers when their keys are running low on battery, but this feature is dependent on the 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 lever or door handle, you can lock, unlock and open your vehicle. Popular Mechanics explains that the key fob can also be used for tracking charging locations, charging, and other vehicle information. The main benefit is that you won't accidentally be locked out. The key fob is connected to an antenna inside the vehicle to determine whether it's within range. If it's not, the engine will not start. This will stop thieves from absconding with your vehicle and selling parts of it. The smart key uses rolling codes to protect against hacking attempts and cloning, reports BMW. A computer within the vehicle recognizes the code and verifies it prior to starting the engine. Most systems also have a backup mechanical system that is the key blade, which is hidden to serve as a styling tool. Modern smart keys can also tell the key that is being used and adjust the vehicle settings accordingly, notes How Stuff Works Electronics. For example, if you turn on the car while holding the key fob in your hand the windows and sunroof will open to let air circulate through the cabin. You can also set a speed limit that will only apply when the vehicle is started using the specified key, which can be useful when loaning your vehicle 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 activate this feature, hold the lock button, then press the unlock button. This will disable your smart key fob from transmitting or receiving any radio signals, which will extend its battery's life considerably. You can always reactivate the function by pressing the lock and unlock buttons again. Some smart keys include anti-theft features that stop them from being copied by thieves. For instance, Mercedes-Benz smart keys use rolling codes to stop unauthorized vehicle access. When a smart key is inserted into ignition, a computer inside the car validates the code in milliseconds prior it starts the engine. BMW offers a similar system with its Display Key, which includes an LCD touchscreen on the smart key for added convenience, and enables drivers to lock or unlock their cars without ever removing it from their pockets. Contact us at Pop-A Lock if you require to replace the battery on your smart key fob or in the event that you are thinking of purchasing a vehicle with a smart-key. Our mobile locksmiths will change the battery on any smart key, and will help to set it up so that your car can recognize it. Special Cases Although smart keys aren't safe from theft, they do assist to hinder thieves. Smart keys employ rolling security codes to prevent hackers, and when put in the ignition, the vehicle's computer validates the code within milliseconds. This technology was invented by Mercedes-Benz and is currently used by a number of high-end car brands. Another benefit is that many smart key systems will continue to operate even if a user forgot the key in the trunk or left it in a restaurant or lost it on the trail. smart forfour key programming will notify the driver when the battery is low. Certain brands provide key covers specifically made for smart keys that keep the fob protected from damage.