Check-in Queensland COVID app to be mandatory from May Posted 4 updated 4 Health minister Yvette D'Ath launched the check-in Queensland app in Brisbane on February 28. ( Share Print text only Cancel Queensland cafes, restaurants and pubs will soon have to use the state government's coronavirus check-in app — or face penalties. Just a month after launching the check-in Queensland app, the government yesterday announced it will be mandatory for "most" hospitality venues from May 1, to streamline contact tracing ability. While it is a valuable tool for contact tracers, a civil libertarian has raised privacy concerns. Here's what we know. What's the app? It came after other states, including New South Wales and the ACT, launched similar apps.