Thank you to @mBossed for giving us a heads-up on this use of QR Codes.
Tees At Risk markets t-shirts that feature designs by current and former teens at risk. A portion of every t-shirt that is sold goes to a charity that is often chosen by the t-shirt designer. Also, every shirt has a QR code. Upon scanning the QR Code, people are directed to a place where they can easily find out the “story” behind the shirt.