What is rickroll qr code?

A Rickroll QR code is a type of QR code that, when scanned, redirects the user to the music video for Rick Astley's song "Never Gonna Give You Up." This type of prank became popular in the mid-2000s and is a form of trolling or internet meme. The term "Rickroll" refers to the act of tricking someone into clicking on a link that leads them to the music video. Rickrolling became so popular that many people use Rickroll QR codes as a humorous way to surprise and prank their friends.