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Smart Keys For Cars A smart key is a wireless car remote which works without the traditional mechanical blade and can unlock doors or pop the trunk from some distance. It also allows you to start your car without needing to turn a key. Most smart keys have indicators for the battery which alert you to an empty battery in advance. Replacing the battery is an easy and simple procedure that doesn't require any specialized tools. Convenience Smart keys are able to unlock doors and trunks as well as turn on the engine of the vehicle without the driver needing to use a metal key. They also have features specifically designed to stop burglaries and theft of vehicles, such as the panic button, which makes noise to scare away people who might be a threat to thieves or in areas that are isolated like underground garages with parking. These key fobs do all this by sending an audio signal between the car and the key fob by using low-power wireless technology. This is an excellent feature, especially for drivers on the go who do not have much time. Smart keys are generally more like plastic cards than actual keys. They can be used to unlock the trunk or doors when a button is pressed on the fob. Some of them even have built-in touchscreens that allow users to control specific settings on their vehicle, including the climate and the audio. The RFID signal sent between a key fob to a car is unique, encrypted and tied to the onboard computer this makes it virtually impossible for thieves who are tech-savvy to connect a stolen car equipped with one. These key fobs can be programmed to transmit a new frequency signal every when they're utilized, so the computer onboard won't recognize an old signal as the “true” signal. Security A lot of people are hesitant to adopt digital keys because they are worried about security. While having a tangible key fob in your hand can feel safer, it's important to realize that digital keys are more secure than you might think. They're encrypted, and the signal that they send to a vehicle can be verified by a specific computer onboard. This means that even if your key fob is stolen the car will not start. Smart keys, unlike traditional key fobs work by using the built-in antennas of your car to communicate with it and perform standard functions like unlocking and launching your vehicle. smart car key coding lets you access your vehicle without having to insert a physical key into the ignition or lock, which is often a hassle. Many systems offer an alternative method of opening and starting your vehicle if you lose your smartkey or if the battery fails. For example, emergency starting can be achieved by placing the key in a slot or holding it in a particular spot on the car's cockpit, where an inductive coil that can transfer energy is hidden. Most smart keys also have a low battery indicator that warns you before the key is completely dead. You can replace the battery on your own in the event of a need. Auto-adjusting settings Instead of the physical keys for your car, smart keys use radio waves to unlock and lock the car. They also allow you to remotely start your engine and keep track of the location of the vehicle in case you're not sure where it's parked. Certain smart keys have settings that automatically adjust the car's interior and exterior according to which key is detected. For example it can be detected the key you're using, and automatically adjust the seating position, mirror settings, and climate control. This is helpful if you have multiple drivers or need to limit certain features when lending your car to a new driver. Smart keys also have the benefit of encryption to stop theft. This isn't a possibility with traditional keys. This technology makes it difficult for criminals with a technological edge to take over a vehicle by imitating a valid signal, reports How Stuff Works Electronics. Smart keys transmit a unique encrypted signal each time the vehicle is unlocked or remotely opened. The battery of a smart key will eventually wear out, just like any other battery-powered device. Most systems are equipped with a backup plan to open and start the car in the event that the battery fails. The emergency method differs, but usually involves either holding the key within range of the car's lock sensor or pressing the button on the key that triggers the emergency start. Battery backup Modern smart keys, which are also referred to as keyless access systems or passive entry, use a transmitter and receiver to unlock your vehicle. The transmitter is integrated into the key fob that you carry with you and the receivers are situated in your vehicle as well as around the outside. The receivers are able to detect the radio frequency signal transmitted by your smart key when you come close to your vehicle and open the doors and ignition. While this system comes with many advantages, such as not having to search in darkness for a key, it can be vulnerable to certain kinds of attacks. How Stuff Works Electronics reports that if the battery of your key gets depleted or lost the person who has it could detect its low frequency transmission signal and open your vehicle. Most smart keys have encrypted signals, making hacking more difficult. If you notice that the smart key fob you purchased does not function properly, it could be caused by a problem with interference. In this case, you should not put your key near a device until the battery of the fob has been replaced. Fortunately, the majority of smart keys will notify you well in advance when their batteries are low and the procedure for replacing them is fairly simple.