Electronic door access control provides the most efficient and convenient way of securing your building and assets. Installing an access control system means that you will never have to change a lock again. Tokens are issued to allow access through the controlled doors, and are easily barred from the system if they are lost, stolen or just not returned by someone who leaves your company. Barred tokens will not allow access through the controlled doors. Door intercoms are also useful for controlling access to domestic properties; especially where the residents may be vulnerable.