ALEXANDRIA, Va., May 5 -- United States Patent no. 12,619,838, issued on May 5, was assigned to CenturyLink Intellectual Property LLC (Denver).
"Systems and methods for verifying remote device proximity in RFID systems" was invented by John R.B. Woodworth (Amissville, Va.) and Dean Ballew (Sterling, Va.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods for verifying remote device proximity in RFID systems are described. To reduce the risk of relay attacks, a terminal may determine a distance of a remote device from the terminal. The terminal may send a computational challenge to the remote device and determine whether a latency of the response is within a maximum acceptable latency, indicati...