Patent ID: 9230375
Filing Date: 2016-01-05
CPC Classification: G07C

Claim Text:
1. A method for controlling access to at least one disconnected door that is communicatively disconnected from authorities and databases, comprising: causing an entity to produce at least one digital signature for a plurality of time intervals of a sequence of dates, wherein the at least one digital signature indicates that at least one user can access the disconnected door during each time interval; causing a first card of a first user to receive the at least one digital signature during each time interval that is provided from the first card to the disconnected door in order to pass through the disconnected door; after the first user presents the first card with the at least one digital signature to the disconnected door, causing the disconnected door to open after verifying that: (i) the at least one digital signature is a digital signature of the entity indicating that the first user can access the disconnected door at each time interval, and (ii) that a current time is within each time interval, wherein the disconnected door remains unopened in response to at least one of: the at least one digital signature being invalid and the current time not being within each time interval; providing information indicating access attempts by other users at the disconnected door to the first card independently of whether the door is caused to open, wherein providing information indicating access attempts by other users at the disconnected door to the first card includes the disconnected door locally storing the access information in a memory associated with the disconnected door; and transferring the information indicating access attempts by other users at the disconnected door from the first card to a database that is disconnected from the door.