We just pressed our first CDs that feature a QR code on the packaging. When the artist, songwriter Tonya Tyner, handed in her artwork, I didn't even know what the black and white square on the back of the digipak was. Now it seems like I am seeing them everywhere. When she told me that it was readable by smart phones and that you could have it link to a variety of functions, I thought it sounded like a great idea.