The recommended QR code scanner for IHS is a new one found by Greg Froese and Scott Flaming says it does MORE than ATT scanner. It is called Qrafter and is a FREE app! However there is nothing wrong with having both apps on the ipad. QRafter allows one student to scan the QR code and pass it on to students at their table or row just by holding the ipads beside each other... A FAST way to get going with your class instruction via QR codes you have made!