ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,526,270, issued on Jan. 13, was assigned to Amazon Technologies Inc. (Reno, Nev.).

"Multi-layer authentication" was invented by Dustin Robert Toff (Seattle).

According to the abstract* released by the U.S. Patent & Trademark Office: "A layered authentication process can use a first authentication layer to filter out invalid requests. The first layer can perform a lightweight authentication to determine requests that do not meet certain authentication criteria. This can include, for example, denying requests that have invalid credentials or that are received from unapproved locations or sources, or that lack the proper format. Requests that pass the initial authentication can be direc...