Access control plays a major role in site security. That makes sense since it’s all about permitting certain users to access specific buildings or areas. It allows you to see exactly who occupies which space and when. Implementing an access control system can include an intercom system but could also, for example, include an electronic locking system or a physical barrier, e.g. a boom gate. Access control systems make granting or denying access easy, but they also help with identification. The system must match your objectives and preferred security level without impeding your business processes. Making the right choice, then, is key.