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Smart Keys For Cars A smart key is a wireless car remote that operates without the traditional mechanical blade and can unlock the doors and pop the trunk from the distance. It is also able to start the car without turning the key. Most smart keys have indicators for batteries that alert you to low battery levels ahead of time. Replacing the battery is a simple and simple process that doesn't require any special tools. Convenience Smart keys are able to unlock doors, trunks and turn on the engine of the vehicle without the driver having to use a key made of metal. They also have features that are designed to prevent burglaries and vehicle theft, such as a panic button, which creates a loud sound to deter potential thieves or suspicious people in remote areas, such as underground parking garages. These key fobs perform all of these functions via radio transmissions between the car key fob and the car using low-power wireless technology. This is a fantastic feature for drivers on the go who do not have much time. A smart key is typically designed to look more like an plastic card than a real key, and it can be used to open the trunk or car's doors when a button on the fob is pushed. Certain smart keys include touchscreens that allow motorists to control their vehicle's setting, including climate and audio. The RFID signal that is transmitted between a car key fob is unique, encoded and tied to the vehicle's computer. This makes it impossible for tech-savvy criminals to connect a stolen car equipped with the key fob. These fobs can also be programmed to send a different frequency signal each time they're used so that the computer doesn't recognize the old one as the true signal. Security Many people are hesitant to switch to digital keys for cars for the reason that they worry about security. Although having a physical key fob at hand might feel safer the digital keys are more secure than many believe. Digital keys are encrypted and the signal they send to a car can be verified by an onboard computer. This means that even if your key fob is stolen the car will not start. Smart keys, unlike traditional keys, operate by using the built-in antennas in your car to connect with it and perform functions such as unlocking and starting your vehicle. This feature lets you access your vehicle without needing to insert an actual key into the ignition or lock which can be a hassle. The majority of systems offer an alternate method to start and open your vehicle in the event of losing your smartkey or if the battery fails. For example the emergency start can be done by putting the key in the slot or keeping it near a particular area on the cockpit, where an inductive coil which can transfer energy is hidden. The majority of smart keys also have a low-battery indicator, which alerts you that the key is dead. If you need to, you can easily replace the batteries yourself. Auto-adjusting settings Instead of using the physical keys for your car Smart keys use radio waves to unlock and lock the car. They're also able to remotely start your engine and track the location of the vehicle in case you forget where it's parked. Certain smart keys come with settings that automatically adjust the car's exterior and interior based on the key you've chosen to use. For instance the car will recognize the type of key you're using and then automatically adjust the seat position, mirror settings, and climate control. This is helpful if need to limit certain features or have multiple drivers. Smart keys also have the benefit of using encryption to prevent theft. This isn't a possibility with traditional keys. This makes it very difficult for thieves who are tech-savvy to hijack a vehicle by mimicking an acceptable frequency signal reports How Stuff Works Electronics. Smart keys transmit a unique, encrypted signal every time the vehicle is locked or remotely opened. As with any other device powered by batteries, a smart key's battery will eventually run out of juice. Most systems come with backup systems to unlock the car and begin it in case the battery fails. The emergency method may differ however, it is usually keeping the key within the proximity to the lock sensor on the car or pressing a key button that triggers the emergency starter. Battery backup Modern smart keys, which are sometimes referred to as keyless entry systems or passive entry, make use of a receiver and transmitter to unlock your vehicle. The transmitter is embedded in the key fob is carried with you and the receivers can be found inside your vehicle and around the outside of it. The receivers are able to detect the radio frequency signals sent by your smart key when you come close to the vehicle and activate the ignition and doors. This system offers many advantages, like not having to hunt in the dark to find keys, however it is susceptible to certain types of attacks. For example, if the key's battery goes out or is lost, someone else could pick up the low frequency transmission signals that are transmitted by your key and then open your car, reports How Stuff Works Electronics. The majority of smart keys are encrypted signals, making hacking more difficult. However, smart car replacement key G28CarKeys can also be interfered with due to electromagnetic fields generated by cell phones, computers and other devices. Therefore, if you find that your smart key fob is not functioning correctly, it could be caused by an interference issue. In this situation you should not place your key near such devices until the battery in the fob has been replaced. Fortunately, the majority of smart keys will inform you ahead of time if their batteries are depleted and the process for replacing them is quite simple.