Hong Kong’s Contact Tracing App Now Flags Unvaccinated Users

Hong Kong’s Covid contact-tracing app has begun flagging users who haven’t uploaded vaccination records, as the city struggles to contain a resurgent outbreak that’s taxing its health system. The LeaveHomeSafe app -- mandatory for entrance to many restaurants and other public venues -- was updated over the weekend and now flashes a red QR code on its check-in page for users that haven’t linked to an official immunization record.