Systems and methods of operating a secured facility

A method of performing access control in a secured facility, wherein the secured facility includes a plurality of access control units physically distributed at different physical locations within the secured facility, the method comprising:

• providing access control cards to users who are granted access to respective portions of the secured facility;
• defining dynamic, de-centralized access control policies that define conditions for access for the users through access control units in the secured facility;
• storing data on at least one of the access control cards that includes first data reflective of one or more of the dynamic access control policies, wherein (i) the first data defines at least two separate event sequences of at least three discrete events, and (ii) wherein the at least two separate event sequences define access conditions for different portions of the secured facility;
• generating second data reflective of dynamic events within the secured facility, the second data being indicative of the user of the at least one of the access control cards initiating one of the at least two separate event sequences;
• and
• performing access control decisions for the user of the at least one card according to the first data and the second data, wherein (i) the access control decisions permit the user of the at least one access cards to traverse through an event sequence initiated by the user, and (ii) the access control decisions prevent the user from traversing through another event sequence until the user completes the event sequence initiated by the user.