What is a QR Code? A quick-response code (QR code) is a type of barcode that contains data for a locator, an identifier, and web tracking. QR codes have been around for a long time. They were first ...

QR codes are convenient but experts warn they can hide costly scams. What steps should you take before you scan? Tips on how to keep yourself secure. Could a QR code put your privacy at risk? You see ...