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Smart Keys For Cars Smart keys are wireless car remote that functions without the traditional mechanical blade and can unlock the doors or open the trunk from an extended distance. It also lets you start your car without needing to turn the key. Most smart keys have battery indicators that alert you to the low battery well in advance. Replacing the battery is a simple and simple procedure that doesn't require any special tools. Convenience Smart keys are able to unlock 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 that are designed to prevent vehicle burglaries and thefts, including the panic key that makes noises to scare off potential thieves in remote areas like underground garages. The key fobs perform all these things by sending radio signals between the car and the key fob using wireless technology that is low-power. This is a fantastic convenience, particularly for drivers who are often traveling and don't have time to spare. A smart key is usually designed to look more like an plastic card than a real key, and it can be used to open the trunk or doors of a car when the fob's button is pushed. Certain smart keys come with a touchscreen that allows drivers to control their car's settings, including audio and climate. The RFID signal sent between a key fob to a car is unique, encrypted and linked to the computer in the car this makes it virtually impossible for hackers with the latest technology to wire a stolen vehicle equipped with one. These fobs are also programmable to send a different frequency signal every time they're used, to ensure that the computer isn't able to recognize the old one as the authentic signal. Security Many people are hesitant adopt digital keys as they are worried about security. While having a physical fob at hand might feel safer however, digital keys are more secure than most people believe. They're encrypted, and the signal they transmit to a car is checked by a specific computer onboard. This means that even if your smart key fob is compromised the car won't start. Smart keys, unlike traditional key fobs, function by using the built-in antennas in your vehicle to communicate with it and perform standard functions like unlocking and launching your vehicle. This technology allows you to gain access to your vehicle without the physical key in the lock or ignition. 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 is achieved by inserting the key into a slot, or holding it close to an area of the cockpit, where an inductive coil will transfer energy. The majority of smart keys have a low battery indicator, which will alert you before the device is completely dead. You can easily replace the battery on your own in the event of a need. Auto-adjusting settings Instead of using a physical car key Smart keys use radio waves to unlock and lock the car. The smart key can remotely start the engine and monitor your vehicle's location if you don't remember where you parked it. Some smart keys are programmed to automatically adjust the interior and exterior of the vehicle based on the key detected. The car will adjust the seat position, mirror settings and climate control based upon which key is being used. This is helpful if you have multiple drivers, or you want to limit certain features when lending your car to an inexperienced driver. Another benefit of smart keys is they employ encryption to stop theft, which isn't possible with traditional keys. This technology makes it difficult for thieves who are tech-savvy to steal a vehicle by mimicking the frequency of a valid signal, reports How Stuff Works Electronics. Smart keys send a unique, encrypted signal every time the vehicle is locked or remotely opened. Like any other battery-powered device the battery of a smart keys will eventually deplete its 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 procedure can differ but usually it involves keeping the key within the proximity to the sensor for the lock on the car or pressing a key button which activates the emergency starter. Battery backup Modern smart keys, which are also referred to as keyless access systems or passive entry use a transmitter and receiver to unlock your car. The transmitter is in the key fob you carry around, and the receivers are located in your vehicle and outside. The receivers can detect the radio frequency signals sent by your smart key when you enter the vehicle and activate the ignition and doors. This system offers many advantages, like not having to look in the dark for keys, however it is also vulnerable to certain types of attacks. How smart fortwo key programming reports that if your key's battery goes out or is damaged an attacker could detect the low-frequency transmission signal and gain access to your vehicle. The majority of smart keys have encrypted signals, which makes hacking more difficult. However, these systems may be affected by electromagnetic fields generated by computers, cell phones and other devices, so if you notice that your smart key fob is not working properly, it may be caused by interference. In that case you should not place your key in proximity to any device until the battery on the key has been replaced. Most smart keys will alert you when their batteries are empty and the process of replacing them is relatively simple.