ALEXANDRIA, Va., April 7 -- United States Patent no. 12,597,308, issued on April 7, was assigned to Total Security Stockholm AB (Solna, Sweden).
"Access control system" was invented by Joel Sahlen (Brottby, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system includes an access control arrangement, an NFC arrangement, an NFC antenna, a memory, and processing device. The NFC arrangement is arranged to: activate an NFC read/write mode in an NFC device with an active NFC field, by the NFC device sensing the NFC antenna in its NFC field; allow a virtual key from the NFC device to be written to the memory as an NDEF message, using the NFC read/write mode in the NFC device; immediately transfer the NDEF ...