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Smart Keys For Cars
Smart keys are wireless remotes that can open doors and pop the trunk without the need for a traditional mechanical blade. It also allows you to start the vehicle without having to turn a key.
The majority of smart keys have indicators for the battery which alert you to a low charge well in advance. It's easy to replace the battery without any special tools.
Convenience
Smart keys can unlock doors and trunks, as well as turn off the engine of the car without the need to use a metal key. They also come with features that can deter burglaries and thefts. For instance, a panic key that emits noises to frighten potential thieves in remote areas like garages underground.
Key fobs accomplish all of these functions by sending radio transmissions between the car key fob and the car using low-power wireless technology. This is a wonderful convenience, especially for drivers who are constantly on the go and don't have time to spare.
Smart keys are generally more like plastic cards than actual keys. They can be used to open the trunk or doors when you press a button on the fob. Some even have a built-in touchscreen to allow users to manage certain settings on their vehicle, including the climate and the audio.
The RFID signal transmitted between the key fob and the car is unique, secure and connected to the computer in the car making it nearly impossible for hackers with the latest technology to hotwire a stolen vehicle equipped with one. These key fobs can be programmed to transmit a new frequency signal each time they're used, so the onboard computer won't recognize an old signal as the "true" signal.
Security
A lot of people are hesitant to adopt digital car keys because they are worried about security. While having a physical 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 transmit to a vehicle is analyzed by a computer onboard. This means that even if the smart key fob is compromised the car will not start.
Unlike traditional key fobs smart keys make use of built-in antennas inside your vehicle and the radio pulse generator inside the key fob to communicate with your vehicle and perform standard functions such as unlocking and starting it. This allows you to access your vehicle without needing to insert keys that are physically placed in the lock or ignition which can be an inconvenience.
If you have lost your smart key or if the battery fails the majority of systems provide an alternative way to open and start your car. Emergency starting can be accomplished by putting the key in an opening, or keeping it in a certain space in the cockpit where an inductive coil can transfer energy.
Many smart keys also have a low-battery indicator, which warns you before the device is dead. If necessary, you can easily replace the batteries yourself.
Auto-adjusting settings
Instead of using physical keys instead, the smart key makes use of radio waves to unlock and lock the car. The smart key can also remotely start the engine and monitor your vehicle's location if you forget where you parked it.
Certain smart keys have settings that automatically adjust your vehicle's interior and exterior depending on the key you've chosen to use. The car can automatically adjust the position of the seat or mirror settings as well as the temperature control based on the key that is being used. This is helpful if you have multiple drivers or wish to restrict certain features when you lend your car to a novice driver.
Another benefit of smart keys is that they use encryption to protect against theft, which isn't possible with traditional keys. This technology makes it very difficult for cybercriminals to hijack a car by imitating a valid signal according to How Stuff Works Electronics. Smart keys transmit a unique, encrypted signal every time the vehicle is locked or remotely opened.
The battery of a smart key will eventually wear out as does any other battery-operated device. Most systems come with an emergency system that allows you to open the car's doors and start it in case the battery fails. The emergency method may differ however, it is usually keeping the key within the range of the sensor for the lock on the car or pressing a button that triggers the emergency starter.
Battery backup
Modern smart keys, which are also known as keyless entry systems or passive entry make use of a receiver and transmitter to unlock your vehicle. The transmitter is located in the key fob you carry around and the receivers are found in and around your vehicle. When smart keys cars approach the vehicle, the radio frequency signal from your smart key is interpreted by the receivers and triggers the ignition and doors.
This system comes with many advantages, like not having to hunt in the dark for keys, however it is also vulnerable to attacks of certain types. How Stuff Works Electronics reports that if your key's battery dies or is lost, someone could pick up the low-frequency transmission signal and then open your vehicle. The majority of smart keys come with encrypted signals, making hacking more difficult.
However, these systems could also be interfered with through electromagnetic fields created by computers, cell phones and other devices. Therefore, if you notice that your smart key fob is not functioning as it should, it could be due to an interference problem. In this case, you shouldn't put your keys near devices like these until the battery of the device has been replaced. Fortunately, most smart keys will notify you well in advance when their batteries are running low and the procedure to replace them is quite simple.