A Remote Keyless System is a technology used in vehicles that allows drivers to unlock and start their cars without using a traditional key. Instead, it relies on a small remote control or key fob that communicates wirelessly with the car's locking system. When the driver presses a button on the fob, it sends a signal to the car, enabling it to unlock the doors or start the engine. This system enhances convenience and security for users. Many modern vehicles equipped with a Remote Keyless System also feature additional functions, such as remote start and trunk release. This technology has become standard in many new cars, improving the overall driving experience.