ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,536,390, issued on Jan. 27, was assigned to International Business Machines Corp. (Armonk, N.Y.).

"Secure radio-frequency identification system" was invented by Guang Han Sui (Beijing), Peng Hui Jiang (Beijing), Su Liu (Austin, Texas) and Jun Su (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A transmission mode of an interrogation from an RFID reader is the basis for determining a responsive communication. Transmission modes matching a pre-defined pattern are the basis for returning expected information, such as an identification code. When the received interrogations do not match a transmission mode, information not helpful in identification i...