Patent ID: 9202322
Filing Date: 2015-12-01
Classification: G07C

Abstract:
1. A premises access control method, comprising: receiving by a ticket server, from a host device, a request for an optical code access ticket for use at a premises by a visitor device separate from the host device to gain access to the premises by a user associated with and carrying the visitor device, the premises comprising a plurality of entrances; authenticating the host device for the premises; sending, using the ticket server, an authorization request to a premises server to determine if the user should be granted access to the premises, the ticket server being remotely located from the premises server and remotely located from the host device; receiving by the ticket server, from the premises server, a confirmation that the authorization request is approved to grant the user access to the premises; sending, by the ticket server, a message to the host device indicating that the request is approved, and an access link message to the visitor device, the access link message providing access to an optical code for accessing the premises; determining if the optical code for accessing the premises has been presented at an incorrect one of the plurality of entrances; and providing visitor guidance information to the visitor device based at least in part on the optical code, the visitor guidance information comprising an elevator call assignment.