California Gov. Gavin Newsom has embraced the QR code.Patrick T. Fallon / AFP via Getty ImagesCalifornia Gov. Gavin Newsom signed a bill to add QR codes to student ID cards.Then, he used a QR code to announce he had signed the bill into law.The bill's author said it was the first time a QR code was used as a signing message.You might be used to scanning a QR code to see a restaurant menu.But California just brought QR codes — shortcuts that take users to a desired landing page by aiming their smartphone camera at it — into the state legislature.Gov.