Access control system and method using user location information for controlling access to a restricted area

A physical access control system for controlling access for an authorized user to a restricted area, comprising:

• a user location information system which receives supplemental location information indicating location of the authorized user from at least one supplemental tracking source;
• and
• a muster comprising a list of authorized users which are in the restricted area;
• an access system, coupled to said user location information system and said muster, which comprises a primary location tracking system for receiving a token, and which controls access by said the authorized user to the restricted area based on said token, said muster, and said supplemental location information;
• wherein said access system grants access only when said token is valid, when said authorized user is located within a local area surrounding the restricted area as indicated by said supplemental location information, and when said authorized user is not on said muster;
• and
• wherein said access system adds said authorized user to said muster when access is granted and removes said authorized user from said muster when said supplemental location information indicates that the authorized user is not within said local area.