Remote and key programming is the process of programming a remote control or key fob to operate a vehicle's electronic systems. This includes the ability to lock, unlock, start, and control certain features of the car such as the windows, sunroof, and alarm system. Remote and key programming can be done by a professional locksmith or dealer service center. The process typically involves connecting a computer to the car's onboard diagnostic port to program the device with specific codes that match up with the car's security system. Once programmed, the remote or key will be able to activate all of its functions when used in conjunction with the car's security system.