Online QR Code Scanner & QR Code Reader | QR Stuff
Amazon.com : 2D Wireless Bluetooth Barcode Scanner with Display Screen,Datamatrix QR Code PDF417 Handheld Barcode Reader for Screen and Printed Bar Code Scan, Handsfree with Stand Silver : Office Products
Scan a QR code with your iPhone, iPad, or iPod touch - Apple Support
Can't Scan QR Codes with iPhone / iPad Camera? Here's a Fix | OSXDaily
How to Scan QR Codes in Your Pixel's Camera App « Pixel :: Gadget Hacks