ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,526,276, issued on Jan. 13, was assigned to Amazon Technologies Inc. (Reno, Nev.).

"Token based one-time password security" was invented by Gregory Branchek Roth (Seattle), Graeme David Baer (Seattle) and Brian Irl Pratt (Seattle).

According to the abstract* released by the U.S. Patent & Trademark Office: "A one-time password (OTP) based security scheme is described, where a provider pre-generates a number of verification codes (e.g., OTP codes) which will be valid for a predetermined interval. The provider then encodes the verification codes (e.g., by hashing each code with a time value), and stores the verification codes into a data structure. The data structure can be provided to ...