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Smart Keys For Cars Smart keys are wireless remotes that unlock doors and open the trunk without the necessity of a traditional mechanical blade. It also lets you start the vehicle without having to turn the key. The majority of smart keys have indicators for battery levels that notify you of a low charge well in advance. It's easy to replace the battery with no special tools. Convenience Smart keys can open doors or trunks, and also 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 thefts, such as a panic button, which makes noise to scare away people who may be suspicious of thieves in isolated areas like underground garages that are parking. Key fobs accomplish all of these functions by sending radio signals between the car key fob and the car via low-power wireless technology. This is a wonderful feature for drivers on the move who don't have a lot of time. A smart key is usually shaped more like a plastic card rather than a key, and it can be used to open the trunk or car's doors when a button on the fob is pressed. Some smart keys have a touchscreen that allows drivers to control their vehicle's setting, including audio and climate. The RFID signal transmitted between a key fob and car is unique, encoded, and connected to the vehicle's computer. This makes it nearly impossible for criminals with a technological background to connect a stolen vehicle equipped with the key fob. These key fobs can be programmed to transmit a new frequency signal every time they're used, meaning the onboard computer won't recognize an old one as the “true” signal. Security Many people aren't keen to adopt digital car keys due to the fact that they are worried about security. While having a traditional key fob in your pocket may feel safer the digital keys are more secure than most people think. Digital keys are encrypted and the signal they transmit to a car is verified by an onboard computer. The vehicle won't be able to start if the smart key fob is stolen. In contrast to traditional key fobs smart keys operate by utilizing built-in antennas in your car and a radio pulse generator within the key fob that allows it to communicate with your vehicle and perform basic functions like unlocking and opening it. This system allows you to access your vehicle without having to insert an actual key into the ignition or lock, which is often an inconvenience. Most systems offer an alternative method of opening and starting your car in the event that you lose your smartkey or the battery goes out. For example emergency starting could be done by putting the key into a slot or holding it near a particular area in the cockpit, where an inductive coil which can transfer energy is hidden. Additionally, most smart keys have a low-battery indicator that warns you before it goes completely dead. If needed, you can easily replace the batteries yourself. G28CarKeys -adjusting settings Instead of using physical keys it uses radio waves to unlock and lock the car. They're also able to remotely start your engine and track the vehicle's location in case you're not sure where it's parked. Some smart keys are programmed to automatically adjust the interior and exterior of the vehicle depending on the key you've detected. The car can automatically adjust the position of seats, mirror settings and climate control based on the key that is being used. This is very useful if have multiple drivers or wish to restrict certain features when you loan your car to an inexperienced driver. Smart keys also have the advantage of using encryption to protect against theft. This is not possible with traditional keys. This technology makes it very difficult for criminals with a technological edge to take over a vehicle by imitating a valid signal according to How Stuff Works Electronics. Smart keys send a distinct, encrypted signal every time the vehicle is left unlocked or remotely opened. The battery of a smart key will eventually run out like any other battery-operated device. Most of the systems are built with a backup system to open the car and start it in the event of a battery failure. The emergency method can vary but usually it involves holding the key within the proximity to the sensor for the lock on the car or pressing a key button that activates the emergency starter. Battery Backup Modern smart keys are also known by the names keyless entry systems as well as passive entry. They utilize a transmitter to unlock your vehicle. The transmitter is built into the key fob you carry around with you, and the receivers are located in your vehicle as well as around the outside of it. When you drive by the vehicle, the radio frequency signal from your smart key is picked up by the receivers and activates the ignition and doors. The system has numerous advantages, like not having to look in the dark to find keys, but it is susceptible to certain types attacks. For example, if the key's battery fails or it is lost, someone could be able to pick up the low frequency transmission signals from the key and gain access to your car, reports How Stuff Works Electronics. This is why most smart keys are equipped with encrypted signals to make hacking a challenge. If you find that the smart key fob isn't able to function properly, it could be caused by a problem with interference. In this situation, you shouldn't put your keys near devices like these until the battery of the device has been replaced. Fortunately, many smart keys will inform you well in advance when their batteries are drained and the procedure to replace them is fairly simple.