Remote Keyless Systems are technology used in vehicles that allow drivers to unlock and start their cars without using a traditional key. Instead, these systems use a small remote control or a key fob that communicates wirelessly with the car. When the driver approaches the vehicle, the system detects the fob and unlocks the doors automatically, making it convenient and efficient. These systems often include additional features, such as the ability to start the engine remotely, which is especially useful in extreme weather conditions. Many modern cars equipped with Remote Keyless Systems also offer enhanced security measures, reducing the risk of theft and providing peace of mind for owners.