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Smart Keys For Cars Smart keys are wireless remotes that can open doors and open the trunk without the requirement for a mechanical blade. It can also be used to start the car without turning a key. The majority of smart phones come with battery indicators that warn you in advance of a low charge. Replacing the battery is a fast and simple process that doesn't require any specialized tools. Convenience Smart keys are able to unlock doors, trunks and turn on the engine of the car without the need to use a metal key. They also come with features that are designed to deter burglaries and vehicle thefts, such as a panic button, which generates noise to scare away possible thieves or suspicious individuals in areas with no security, such as underground garages that are parking. These key fobs do all of these functions by sending a radio signal between the car and the key fob using low-power wireless technology. This is a fantastic option for those on the go who do not have much time. A smart key is usually designed to look more like an plastic card rather than a key, and it can be used to open the trunk or doors of a car when a button on the fob is pushed. Some of them even have an integrated touchscreen that allows users to control specific settings on their vehicle, such as climate and audio. The RFID signal sent between a key fob to a car is unique, encrypted and linked to the onboard computer, making it almost impossible for hackers with the latest technology to wire a stolen vehicle equipped with one. The fobs can also be programmed to transmit an updated frequency signal each time they're used, meaning the computer that's onboard won't recognise an old signal as the “true” signal. Security Many people are hesitant to adopt digital keys because they are worried about security. While having a traditional key fob in your pocket may feel more secure however, digital keys are more secure than most people believe. The digital keys are encrypted and the signal they send to a car is analyzed by an onboard computer. The car won't start in the event that the smart key fob is stolen. Unlike traditional key fobs smart keys make use of built-in antennas inside your car and a radio pulse generator in the key fob to connect with your vehicle, and perform standard functions like unlocking or starting it. This technology lets you access your vehicle without the need to insert keys that are physically placed in the lock or ignition which can be a hassle. The majority of systems offer an alternate method of opening and starting your car in the event that you lose your smartkey or battery fails. For example emergency starting can be done by putting the key into a slot or holding it close to a certain area on the cockpit, where an inductive coil that can transfer energy is hidden. Additionally, the majority of smart keys also have a low-battery indicator that warns you before it completely dies. If necessary, you can easily replace the batteries on your own. Auto-adjusting settings Instead of using the physical keys for your car Smart keys use radio waves to unlock and lock the car. The smart key also allows you to remotely start the engine and monitor your vehicle's location in case you forget where you parked it. Some smart keys are programmed to automatically adjust the interior and exterior of the vehicle based on the key detected. smart car key fob replacement will automatically adjust the position of the seat, mirror settings and climate control based upon the key that is being used. This is useful if you wish to restrict certain features or have multiple drivers. Smart keys also have the benefit of using encryption to protect against theft. This is not possible with traditional keys. This makes it very difficult for thieves who are tech-savvy to take over a vehicle through replicating an authentic frequency signal, according to How Stuff Works Electronics. Smart keys send a unique encrypted signal each time the vehicle is left unlocked or remotely opened. As with any other device powered by batteries the battery of a smart key will eventually deplete its juice. The majority of systems are equipped with a backup plan to open the door and start the car when the battery is not working. The emergency method is different however, it is usually holding the key within range of the car's lock sensor or pressing a button on the key that activates the emergency starter. Battery Backup Modern smart keys are also called keyless entry systems or passive entry. They use a transmitter to unlock your vehicle. The transmitter is situated inside the key fob that you carry around and the receivers are found inside and outside your vehicle. The receivers are able to detect the radio frequency signal transmitted by your smart key when you come close to the vehicle and activate the doors and ignition. This system offers many advantages, like not having to look in the dark to find keys, however it is susceptible to certain types attacks. For instance, if your key's battery goes out or is lost, someone could pick up the low frequency transmission signals from your key and open your car, as per How Stuff Works Electronics. The majority of smart keys come with encrypted signals, making hacking more difficult. However, these systems may be affected by electromagnetic fields generated by cell phones, computers and other devices. If you notice that your smart key fob isn't working properly, it may be due to interference issues. In that case it is best not to place your key near any device until the fob's battery has been replaced. Most smart keys will inform you when their batteries are low, and the replacement process is fairly simple.