US Patent Issued on June 16 for "Building system with elevator call entry via offline QR code credential" (Chinese Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,654,984, issued on June 16.

"Building system with elevator call entry via offline QR code credential" was invented by Samuel Chen (Hong Kong) and Jack Wong (Hong Kong).

According to the abstract* released by the U.S. Patent & Trademark Office: "A building system has an elevator system controlled by a controller system to move an elevator car between building floors, and a registration computer system communicatively coupled to the controller system. The registration computer system generates an activation (QR) code that a user requesting elevator service scans with a mobile communications device. The activation code encodes user information including access rights of the user in the ...