ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,445,727, issued on Oct. 14, was assigned to THE REGENTS OF THE UNIVERSITY OF MICHIGAN (Ann Arbor, Mich.) and UNIVERSITY OF FLORIDA RESEARCH FOUNDATION INC. (Gainesville, Fla.).

"Acoustic eavesdropping using a smartphone camera" was invented by Yan Long (Ann Arbor, Mich.), Kevin Fu (Ann Arbor, Mich.), Kevin Butler (Gainesville, Fla.), Sara Rampazzi (Gainesville, Fla.) and Pirouz Naghavi (Gainesville, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Rolling shutter and movable lens structures widely found in smartphone cameras modulate structure-borne sounds onto camera images, creating a point-of-view optical-acoustic side channel for acoustic eavesdr...