US Patent Issued to NEC on Feb. 4 for "Personal authentication device based on echo sounds, personal authentication method, and recording medium" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,216,752, issued on Feb. 4, was assigned to NEC Corp. (Tokyo).

"Personal authentication device based on echo sounds, personal authentication method, and recording medium" was invented by Takafumi Koshinaka (Tokyo), Masahiro Saikou (Tokyo) and Takayuki Arakawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a personal authentication device capable of simply securing security with little psychological and physical burden of a user to be authenticated. Personal authentication device includes: transmission unit that transmits a first acoustic signal to a user's head; observation unit that observes a second acoustic signal after the first aco...