Access control is a controlling who enters a location and when. The person entering may be an employee, a contractor or a visitor and they may be on foot, driving a vehicle or using another mode of transport.
Access control system, usually referring to an electronic security system. They typically use an identifier such as an access card to authorize people to enter certain areas. And, as they’re capable of logging who accessed where and when, they can provide valuable data to help you track how your buildings and sites are being used