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Smart Keys For Cars Smart keys are wireless car remote that functions without the traditional mechanical blade. It can unlock doors or open the trunk from an extended distance. smart car key programming allows you to start your car without needing to turn a key. Most smart keys come with indicators for the battery that alert you to the low battery well ahead of time. Replacing the battery is an easy and simple procedure that doesn't require any specialized tools. Convenience Smart keys can open doors, trunks and turn on the engine of the car without the driver needing to use a metal key. They also have features that help deter vehicle burglaries and thefts. For instance, a panic key that emits sounds to frighten away potential thieves in areas that are not accessible to them, such as underground garages. The key fobs perform all this by sending an audio signal between the car and the key fob using low-power wireless technology. This is a great feature, especially for drivers on the go who don't have a lot of time. Smart keys are typically more like plastic cards than actual keys. They are used to unlock the trunk or doors when you press a button on the fob. Some even come with a built-in touchscreen that lets users to control certain settings on their vehicle, such as the climate and the audio. The RFID signal transmitted between the key fob to a car is distinct, encrypted, and tied to the computer onboard which makes it nearly impossible for hackers with the latest technology to wire a stolen vehicle equipped with one. Key fobs can also be programmed to send a new frequency signal each when they're utilized, so the computer onboard won't recognize an old signal as the “true” signal. Security Many people aren't keen to switch to digital keys for cars for the reason that they worry about security. While having a tangible key fob to hand does feel safer, it's important to understand that digital keys are also more secure than you might think. They're secure, and the signal that they send to a car is checked with a specially-designed onboard computer. This means that even if your key fob is compromised, the car will never start. Smart keys, unlike traditional key fobs, function by using the built-in antennas in your car to communicate with it, and perform functions like unlocking and launching your vehicle. This allows you to gain access to your vehicle without having an actual key that you insert into the ignition or lock. If you lose your smart key or if its battery is dead there is an alternative way to open and start your vehicle. Emergency starting can be accomplished by inserting the key into an opening, or keeping it close to a specific area of the cockpit where an inductive coil will transfer energy. Furthermore, many smart keys have a low battery indicator that will alert you before it completely dies. You can easily replace the battery on your own in the event of a need. Auto-adjusting settings Instead of a physical car key Smart keys use radio waves to unlock and lock the vehicle. They're also able to remotely start your engine and keep track of the vehicle's location in case you forget where it's parked. Some smart keys have settings that automatically adjust the car's interior and exterior according to the key you've chosen to use. For example the car can detect the type of key you're using and then automatically adjust the seat position, mirror settings and the temperature control. This is beneficial if you need to limit certain features or have multiple drivers. Another benefit of smart keys is the fact that they employ encryption to protect against theft, which isn't feasible with traditional keys. This technology makes it extremely difficult for criminals with a technological edge to hijack a car by imitating a valid signal, reports How Stuff Works Electronics. Smart keys transmit a unique encrypted message each time the vehicle's remote or unlocked. Just like any battery-operated device the battery of a smart key will eventually deplete its juice. The majority of systems are designed with a backup strategy to unlock and start the car when the battery is not working. The emergency procedure can differ, but it usually involves holding the key within the range of the lock sensor on the car or pressing a key button that activates 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 situated in the key fob you carry around and the receivers are located in your vehicle and outside. The receivers are able to detect the radio frequency signal transmitted by your smart key when you approach the vehicle and activate the doors and ignition. This system comes with many advantages, such as not having to hunt in the dark to find keys, however it is also vulnerable to attacks of a certain type. For instance, if a key's battery fails or it is lost, someone else could pick up the low frequency transmission signals from your key and open your car, as per How Stuff Works Electronics. This is why the majority of smart keys have encrypted signals that ensure that hacking is difficult. However, these systems could also be interfered with through electromagnetic fields created by computers, cell phones and other devices. So if you find 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 such device until the battery on the key has been replaced. Fortunately, many smart keys will inform you ahead of time when their batteries are running low and the procedure for replacing them is relatively simple.