This one is sometimes called quishing. Someone slaps a printed sticker over the real QR code on a parking meter, an EV charger, a restaurant menu, a poster, or a delivery slip. The fake code goes to a website that looks legitimate and asks you to pay, sign in, or download an app. The address you’re going to is hidden inside the squiggly square. You can’t read it with your eyes.
The reason this works isn’t sophistication. It’s context. QR codes feel official now. You scan a code in a restaurant and expect a menu. You scan one on a meter and expect to pay. Nobody scrutinizes a parking meter sticker.
The newer twist is QR codes mailed in fake package-undeliverable letters. Treat any QR code from an unverified source as untrusted.