ALEXANDRIA, Va., June 4 -- United States Patent no. 12,321,506, issued on June 3, was assigned to Block Inc. (Oakland, Calif.).
"Secure electronic circuitry with tamper detection" was invented by Mani Razaghi (San Francisco).
According to the abstract* released by the U.S. Patent & Trademark Office: "A circuit board is protected by being enclosed in a security housing that includes conductive tamper traces running along its interior surface, the conductive tamper traces being a housing portion of a tamper detection circuit. The tamper detection circuit also includes a board portion that detect tampering with the tamper detection circuit by monitoring voltages at monitor nodes along the board portion. The board portion of the tamper detect...