ALEXANDRIA, Va., June 4 -- United States Patent no. 12,323,658, issued on June 3, was assigned to Sonifi Solutions Inc. (Sioux Falls, S.D.).

"Devices, systems, and methods for real time audience measurement in hospitality environments" was invented by Eric Aasen (Sioux Falls, S.D.), Joshua H. Pulford (Sioux Falls, S.D.) and Leon P. Stoel (Sioux Falls, S.D.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for real time audience measurement includes a display, an endpoint device coupled to the display, and a central controller configured to generate a first message that flags a channel of interest from among a plurality of channels that provide content for displaying on the display. The central controll...