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What Can a Smart Car Key Fob Do For You? They are also known as fobs, keysless entry or smart keys, they were introduced by Mercedes in 1998. Key fobs that are computer controlled can perform a variety of functions, including locking and unlocking cars as well as starting it. They function by broadcasting an encrypted, rolling signal. This makes them more resistant to tech-savvy thieves. Safety A smart key fob constantly communicates with vehicles using radiofrequency signals. It transmits a low power signal that, upon pressing the button, instructs the vehicle to unlock doors and begin the engine. The car recognizes the encrypted code from a specific keyfob. This means that even when the key fob has been stolen, it cannot be used to begin the car. But a new form of hack can enable thieves to gain access to that communication. Relay attacks are carried out with devices that transmit at the same rate as keys. How Stuff Works Electronics says that thieves could put one of these devices in a pocket or hidden spot to block the remote control of the lock. This is a problem that is likely to become more prevalent as more motorists are switching to smart keys. A smart key fob is not just a security device, but it can also make your life easier by automatically taking care of the needs of your vehicle. For instance a key fob linked to your smartphone can detect your location and unlock the doors, so you don't need to push the remote button. It could also detect that you are leaving the car and then automatically close it, so you won't forget to lock the doors. A lot of smart key fobs have an indicator for batteries that informs you well in advance when the battery is running low. The majority of models let you replace the battery quickly and easily without any tools or equipment required. Convenience Smart keys are not required to be physically placed in an ignition slot to unlock or start the vehicle. Instead, the driver must have it on their person and bring it within range of the vehicle, as described by the BMW Group. In reality, certain smart keys, such as the Display Key, come with an extremely small LCD touchscreen with color that allows drivers to access features like locking or unlocking as well as keyless start directly from their key fob, without having to connect to the car's Bluetooth system. A smart key can also save drivers time by automating the locking of their car doors when they leave. This feature is found in many vehicles, according to Consumer Reports, and can assist in allowing drivers to move into parking spots that are tight without accidentally hitting something or someone else. Additionally, smart key systems usually do not transmit the same frequency signal repeatedly which could make them more susceptible to relay attacks, says Open Road Auto Group. Smart keys are unique to each vehicle, so a stolen vehicle can't be connected to a hotwire. This technology makes it extremely difficult for thieves to steal a car. Security The latest cars are equipped with more advanced electronic features than ever before, and many of them are housed on the key fob. These devices are capable of more than locking and unlocking doors, or making chirping sounds to assist drivers locate their vehicle in parking spaces. However there are some who are unaware of the full capabilities. For example, some smart keys can trigger the auto windows of a car and sunroof once they are activated. One auto editor in CR walked into her Honda Accord to find the windows all down and the sunroof open. She was grateful for her Smart Key that automatically locked the car. Some smart keys employ computer-encrypted signals to stop car thieves According to How Stuff Works. This technology is able to prevent hotwiring where thieves steal the vehicle's engine control module (ECM), which is usually found in the front of the engine block. The ECM controls many vital functions, including engine power, transmission control, and more. Other features of smart keys include anti-theft coding and a unique security ID that is assigned to each key, which can disable the ignition if it's not the right one. The security ID is a specific code that's sent from the ECM to the key once it's put into the ignition. It is then verified by a sensor inside the car. Maintenance A smart car key fob can do more than just unlock your door. It can start your engine, and also activate the brakes and suspension remotely. It can also provide details about your car, like fuel level and the temperature of your oil. Like all electronic equipment like a smart car key fob requires regular maintenance to operate properly. Most modern key fobs feature battery indicators that warn the driver when the battery is low. It's easy to replace the battery, and you don't need any special tools. In some instances, however, a smart key can stop working completely. If you suspect that's the case, try to reset it by taking the car out and then returning inside. This will enable the car to understand that the key fob is in the vehicle and allow it regain functionality. If smart car key replacement are unable to get your fob to work call a locksmith assist. They can reprogram it to ensure that the car can recognize it again and allows you to utilize all of its features. This is typically cheaper than buying a new fob and can save you money over the course of time. In some instances locksmiths can fix an existing fob to allow it to be used to create a new key. This could save you money in the end.