Patent ID: 7791452
Filing Date: 2010-09-07
Classification: G07C

Abstract:
1. A demand-based authorization method for controlling access to a plurality of lock mechanisms in a wireless access control system having a central access control system comprising a central access controller and a central wireless communicator, and having a separate remote access control system connected to each of said plurality of lock mechanisms comprising a remote access controller, a remote credential reader and a remote wireless communicator maintained in a standby mode to conserve power until activated, wherein said method comprises the steps of: storing a list of valid credentials in a memory at said remote access control system wherein said list is indicative of authorized users; receiving a credential at said credential reader; comparing said credential to said list of valid credentials; authorizing access from said remote access control system if said comparing step is indicative of an authorized user; activating said remote wireless communicator to initiate a wireless communication between said remote wireless communicator and central wireless communicator when said comparing step is not indicative of an authorized user to obtain an updated list of valid credentials; re-comparing said credential to said updated list of valid credentials; and authorizing access if said re-comparing step is indicative of an authorized user.