There's a huge jump from 'you scan QR code, get notified if there's a place/time match with a confirmed case' to 'restaurant scans your QR code, keeps your details, you get hunted down if there's a place/time match'.Health authorities may in future call up people who need to be tested for Covid-19 or sent into quarantine using contact information provided in the LeaveHomeSafe app.
https://news.rthk.hk/rthk/en/compone...3-20220131.htm