ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,756,703, issued on Oct. 6, was assigned to SONOS INC. (Goleta, Calif.).
"Anonymous guest device token" was invented by Dominic Anello (Boston) and Benjamin Greenberg (Rydal, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A guest control device communicates, to a first playback device, a self-signed authorization assertion. The guest control device then receives a signed local-access token. The signed local-access token is signed by the first playback device and allows the guest control device to access services provided by playback devices on the local area network. The guest control device communicates to a cloud network a cloud authorization grant ...