Do not scan QR code you find online, only scan when paying to another crypto wallet or you want to sell your BTC on an exchange, QR codes can come with malicious things too.
The advice not to scan QR codes found online is wise. I myself am also very careful in this regard because threats can come at any time from unknown QR codes. The best solution is that I only pay cash although other options are also available using the QR code payment menu.
due to the pandemic, we were all forced to sign in wherever we go as to make contact tracing easier i think this has made a lot of people more vulnerable putting out your contact information out there is a bait for scammers and hackers not only that but since then people in my country has been receiving so much spams