What is a QR code and how does it work?
Square Code Secrets
What is a QR code and how does it work?
You've seen them everywhere — those weird black-and-white squares on posters, menus, even cereal boxes. Point your phone at one and bloop — a website opens, a video starts, a coupon appears. What IS that square doing? How does it know where to take you?
A QR code is basically a picture made of data. "QR" stands for Quick Response, because it was invented to be scanned fast. Think of it like a fancy barcode's big sibling — instead of stripes that hold a dozen numbers, you get a square grid that can hold thousands of letters, numbers, and symbols.
