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Smart Keys For Cars A smart key is a wireless car remote that works without the traditional mechanical blade. It can open doors or open the trunk from a distance. It also allows you to start the car without having to turn the key. The majority of smart keys come with battery indicators that warn you well in advance of a low battery. It's easy to replace the battery without special tools. Convenience Smart keys are able to unlock doors and trunks as well as turn on the engine of the car without the need to use a key made of metal. They also come with features specifically designed to stop burglaries and vehicle theft, such as the panic button, which generates noise to scare away people who might be a threat to thieves or in isolated areas like underground parking garages. Key fobs fulfill all of these functions via radio signals between the car key fob and the car via low-power wireless technology. This is a fantastic convenience, especially for drivers who are constantly in a hurry and don't have time to spare. Smart keys are typically more like plastic cards than actual keys. car smart key are used to unlock the trunk or doors when they are pressed by the fob. Some of them even have built-in touchscreens that allow drivers to control certain settings on their vehicle, such as climate and audio. The RFID signal sent between the key fob and the car is unique, encoded and linked to the car's onboard computer. This makes it almost impossible for hackers with the right skills to connect a stolen vehicle equipped with the key fob. These fobs can also be programmed to transmit a different frequency signal every time they're used, so that the onboard computer doesn't recognize that old one as the real signal. Security Many people aren't keen to adopt digital car keys because they are concerned about security. While having a physical fob in your pocket may feel more secure the digital keys are more secure than many believe. The digital keys are encrypted and the signal they transmit to a car is analyzed by an onboard computer. This means that even if your key fob is stolen, the car will never start. Unlike traditional key fobs, smart keys work by using built-in antennas inside your vehicle and an electronic radio-frequency generator inside the key fob to connect with your vehicle and perform functions such as unlocking and opening it. This allows you to gain access to your vehicle without the physical key to insert into the lock or ignition. 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. It is possible to start your car in emergency situations by placing the key into an opening, or keeping it close to an area of the cockpit where an inductive coil will transfer energy. Many smart keys also come with a low battery indicator that warns you when the key is dead. If you need to, 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 vehicle. They also allow you 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 according to the key that is detected. For instance, the car can recognize the key you're using, and automatically adjust the seating position, mirror settings, and the climate control. 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 the fact that they employ encryption to protect against theft, something that isn't possible with traditional keys. This technology makes it difficult for tech-savvy thieves to gain access to a vehicle by replicating an authentic frequency signal, according to How Stuff Works Electronics. Smart keys transmit a unique encrypted signal each time the vehicle is locked or remotely opened. Just like any battery-operated device the battery of a smart keys will eventually deplete its juice. Most systems are equipped with a backup plan to open the door and start the car in the event of a battery failure. The emergency method differs and usually involves holding the key within the range of the car's lock sensor or pressing the key with a button that triggers the emergency start. Battery Backup Modern smart keys are also called keyless entry systems as well as passive entry. They use an electronic transmitter to unlock your vehicle. The transmitter is located in the key fob you carry around, and the receivers are located in and around your vehicle. The receivers are able to detect the radio frequency signals sent by your smart key when you approach the vehicle and activate the ignition and doors. The system has numerous advantages, like not having to search in the dark for keys, however it is susceptible to attacks of a certain type. How Stuff Works Electronics reports that if the battery in your key goes out or is damaged an attacker could detect the low frequency transmission signal and then open your vehicle. This is why most smart keys feature encrypted signals to ensure that hacking is difficult. However, these systems can also be interfered with by electromagnetic fields produced by computers, cell phones and other devices, so if you find that your smart key fob is not functioning as it should, it could be due to interference issues. In this case you should avoid placing your key near any device until the fob's battery has been replaced. Fortunately, the majority of smart keys will warn you ahead of time when their batteries are drained and the procedure to replace them is relatively simple.