Jake Peterson is Lifehacker’s Tech Editor, and has been covering tech news and how-tos for nearly a decade. His team covers all things technology, including AI, smartphones, computers, game consoles, ...

Ever wondered why seemingly harmless Amazon packages are suddenly landing on your doorstep with no sender name, no return address—just a mysterious QR code tucked inside, inviting you to scan it?

What is a QR code? A QR code (short for Quick Response code) is a two-dimensional barcode that can be read by your smartphone camera. QR codes provide quick access to product information, promotions ...

QR codes have become a convenience of modern life. Just scan the black and white mosaic with your phone’s camera and you can do everything from connect to your hotel room Wi-Fi to pay for that public ...

Residents are being warned to stay alert for a new scam involving unsolicited packages and malicious QR codes that could put personal and financial information at risk. Officials say the scheme is a ...