QR Code Technology Demystified: From Black Squares to Smart Links. Posted: May 22, 2025 | Last updated: June 15, 2025. You’ve scanned them on menus, packages, tickets, and more — but how do QR ...

Would-be scammers hide dangerous links in the black-and-white jumble of some QR codes, ... “They want you to scan the QR code and open the URL without thinking about it,” the F.T.C. said.