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What Can a Smart Car Key Fob Do For You? Known as fobs, keyless entry or smart keys, they were first introduced by Mercedes in 1998. These key fobs controlled by computers can accomplish many things, including locking and unlocking vehicles as well as starting it. They function by broadcasting an encrypted and rolling signal. This makes them less vulnerable to thieves who are tech-savvy. Safety A smart key fob continually communicates with vehicles via radiofrequency waves. It sends out a low-power signal that, when pressed it, signals the vehicle to unlock doors and start the engine. The car can recognize the unique encrypted code from a particular keyfob. This means that even if the key fob is stolen, it isn't used to start the car. But a new type of hacking can allow thieves to exploit that communication. Relay attacks are based on devices which transmit on the same frequency as the key fob. How Stuff Works Electronics says that a burglar could slip one of these gadgets into the pocket or hidden area to stop the remote lock command. This is a problem which could become more frequent as more people adopt smart keys. Apart from these security features, smart key fobs can make life easier by automatically taking care of the needs of your vehicle. A key fob that is connected to your smartphone, for instance can sense your presence and then unlock the doors, so you don't need to push a remote button. It also can detect that you're leaving the car and then automatically secure it, so you don't forget to lock your doors. A majority of smart key fobs have a battery indicator which warns you when the battery is running low. The replacement of the battery in the majority of models is a simple, easy procedure that doesn't require any special tools. Convenience Unlike a traditional metal key smart keys do not require physically inserting into an ignition slot in order to unlock or start the vehicle. Instead, the user must have it in their possession and bring it within the range of the vehicle, as explained by the BMW Group. Certain smart keys, like the Display Key, come with small LCD touchscreen that gives drivers access to features such as locking, unlocking and keyless start directly from their key fob, without having to connect to the Bluetooth system of the car. Another way a smart key can help drivers save time is by automating the process of locking their car doors after they leave. Consumer Reports says that this feature is present on a variety of vehicles. It also makes it easier for drivers to maneuver around tight spots without accidentally squeezing someone or something. Open Road Auto Group explains that smart key systems don't transmit the same frequency signal over and over which can make them more vulnerable to relay attacks. Smart keys are unique to each vehicle, therefore a stolen vehicle cannot be connected to a hotwire. This makes it extremely difficult for thieves to steal a vehicle. Security Modern cars come with more advanced electronic features than ever before, and a few of them are found in the key fob. These gadgets are capable of more than locking and unlocking doors, or making chirping sounds to help motorists locate their car in parking lots. However there are some who are unaware of the full capabilities. Certain keys, such as instance, can trigger the auto windows and sunroofs of a vehicle when you press. One CR auto editor was able to walk into her Honda Accord to find the windows shut and the sunroof completely open. That's just one reason she was so grateful for her Smart Key, which locked the car automatically. According to How replacement smart key , some smart keys utilize computer-encrypted signals to prevent car thieves from stealing. This technology blocks hotwiring, which thieves steal a vehicle's engine controller module (ECM) which is typically located in front of the engine. The ECM is responsible for a variety important functions, including transmission control and engine power. Smart keys also come with anti-theft codes as well as a unique security ID code assigned to each key. This will disable ignition when the wrong key is used. The security ID is a number that is transmitted by the ECM from the key to the ignition, followed by verification by a sensor inside the car. Maintenance Smart car key fobs do more than unlock the door. It can start your engine and activate the suspension and brakes remotely. It also can provide information about your vehicle including fuel level and temperature of the oil. Like any piece of electronic equipment the smart car key fob requires regular maintenance to operate properly. Modern key fobs have battery indicators to alert the driver that it is time to replace the battery. Replacing the battery is an easy process, and no specialized tools are required. In some instances however, a smart key can stop working entirely. If you suspect this is the cause attempt to reset the smart key by leaving the vehicle and then returning to it. This will let the car recognize that the fob is in use and allow it to regain functionality. Contact a locksmith if have trouble getting your key fob working. 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 purchasing a new key and could save you money over time. In some cases, a locksmith can even modify an existing fob in order to be used to make an entirely new key. This can save you even more money in the long run.