QR (Quick Response) Codes

Mobile Learning with QR Codes by Laura Jacob

Guide to Kaywa QR Codes, PDF

Kaywa's QR Code Generator

GO QR.Me QR Code Generator

Kerem Erkan QR Code Generator

ZXing Project QR Code Generator

Mobile-Barcodes QR Code Generator

Delivr QR Code Generator

BeeTagg QR Code Generator

Article: The Active Class, Mobile Learning with QR Codes