ALEXANDRIA, Va., June 18 -- United States Patent no. 12,327,447, issued on June 10, was assigned to ASSA ABLOY AB (Stockholm).
"Key delegation for controlling access" was invented by Frans Lundberg (Saltsjobaden, Sweden) and Peter Stenlund (Stockholm).
According to the abstract* released by the U.S. Patent & Trademark Office: "It is provided a method for controlling access to an access object. The method is performed in an electronic key device and comprises the steps of: communicating with an access control device to obtain an identity of the access control device; sending an access request to a server, the access request comprising an identity of the electronic key device and the identity of the access control device; receiving a respon...