ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,400,508, issued on Aug. 26, was assigned to ASSA ABLOY AB (Stockholm).
"Access control device" was invented by Kaj Niegmann (Hagersten, Sweden) and Robin Dahlback (Stockholm).
According to the abstract* released by the U.S. Patent & Trademark Office: "It is provided an electronic lock for controlling access to a restricted physical space. The electronic lock comprises: a first credential interface for accepting a credential from a user for evaluating whether access for the user should be granted; and a second credential interface for accepting a credential from a user for evaluating whether access for the user should be granted. The first credential interface is configured to be acti...