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Smart Keys For Cars A smart key is a wireless car remote which works without the traditional mechanical blade. It can unlock the doors or pop the trunk from a distance. It can also be used to start the car without turning a key. The majority of smart keys have indicators for the battery which alert you to the low battery well ahead of time. Replacing the battery is a fast and simple procedure that doesn't require any specialized tools. Convenience Smart keys can open doors and trunks as well as turn on the engine of the car without the driver needing to use a metal key. They also come with features specifically designed to stop burglaries and vehicle theft, such as a panic button, which produces a sound to frighten away possible thieves or suspicious individuals in areas that are isolated, such as underground garages that are parking. These key fobs do all this by sending radio signals between the car and the key fob, using wireless technology that is low-power. This is a fantastic option for those on the go who do not have much time. Smart keys generally look more like plastic cards than actual keys. They can be used to open the trunk or doors when the button is pressed on the fob. Some even come with a built-in touchscreen that lets users to manage certain settings on their vehicle, such as the climate and the audio. The RFID signal that is transmitted between the car and a key fob is unique, encoded and linked to the car's onboard computer. This makes it almost impossible for criminals with a technological background to connect a stolen car equipped with a key fob. The fobs can also be programmed to transmit an updated frequency signal each time they're used. This means that the computer in the car won't be able to recognize an old signal as the “true” signal. Security A lot of people are hesitant to adopt digital keys as they are worried about security. While having a physical key fob on hand may make you feel more secure, it's crucial to understand that digital keys are also more secure than you think. Digital keys are encrypted and the signal they transmit to a car is verified by an onboard computer. This means that even if the smart key fob is compromised the car won't start. Smart keys, unlike traditional keys, operate by using the built-in antennas of your vehicle to communicate with it and perform basic functions like unlocking and launching your vehicle. This system allows you to access your vehicle without needing to insert an actual key into the ignition or lock which can be difficult. If you lose your smart key, or if the battery fails the majority of systems provide an alternative method to open and start your car. For instance the emergency start can be accomplished by putting the key into the slot or keeping it near a specific area on the car's cockpit, where an inductive coil that can transfer energy is hidden. Furthermore, many smart keys have a low battery indicator that will alert you before it goes completely dead. If you need to, you can easily replace the batteries on your own. Auto-adjusting settings Instead of a physical car key Smart keys use radio waves to unlock and lock the car. They also have the ability to remotely start your engine and track the location of your vehicle in case you're not sure where it's parked. Certain smart keys are programmed to automatically adjust the interior and exterior of the vehicle based on the key detected. The car will automatically adjust seat position or mirror settings as well as climate control based upon the type of key used. This is very useful if have multiple drivers or wish to limit certain features when you loan your car to a novice driver. Smart keys also have the advantage of encryption, which can prevent theft. This isn't a possibility with traditional keys. This technology makes it very difficult for thieves with the latest technology to steal a car by imitating a valid frequency as reported by How Stuff Works Electronics. smart car key fob programming G28CarKeys send a unique encrypted signal each when the vehicle is unlocked or remotely opened. Just like any other battery-powered device the battery of a smart key will eventually run out of juice. Most systems come with an emergency system that allows you to open the car's doors and start it if the battery is not able to function. The emergency method may differ however, it is usually holding the key within the range of the lock sensor on the car or pressing a key button which activates the emergency starter. Battery backup Modern smart keys, also referred to as keyless access systems or passive entry, utilize a transmitter and a receiver to unlock your car. The transmitter is incorporated into the key fob you carry around with you, and the receivers are situated inside your vehicle and around the outside of it. The receivers are able to detect the radio frequency signal transmitted by your smart key when you enter the vehicle and then activate the doors and ignition. While this system comes with many advantages, including the ability to not have to search in darkness to find keys, it may be vulnerable to certain types of attacks. How Stuff Works Electronics reports that if a key's battery fails or is stolen an attacker could detect its low-frequency transmission signal, and open your vehicle. This is why a majority of smart keys have encrypted signals that make hacking difficult. However, these systems can be affected by electromagnetic fields generated by cell phones, computers and other devices. So if you notice that your smart key fob is not working properly, it may be due to interference issues. In this instance you should not place your key near such devices until the battery of the device has been replaced. The majority of smart keys will notify you when their batteries are depleted and the replacement process is fairly simple.