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 or Quick Response codes are one of the most popular ways to access information on the go. Invented in 1994 and once considered the wave of the future, part of the QR code revival that started in ...

Harbor Freight is known for its wide selection of tools, hardware, equipment, and nearly anything pros or DIYers can imagine. One notable offering is the company's Maddox screen code reader, which ...