This document discusses QR codes, including what they are, who uses them, where they can be found, and how they can be used in art education. QR codes are matrix barcodes that can be scanned by smartphones to access webpages or other digital information. The document explores various ways QR codes have been used in artistic contexts, such as embedding codes in tapestries to share inspirational quotes or using codes to create entire hotel rooms. It suggests teachers can incorporate QR codes into art lessons through scavenger hunts, interactive books and posters, and more to engage students and enhance learning.