QR codes, those black-and-white squares you can scan with your phone, have become ubiquitous. Display a QR — “quick response” — code on your phone, and it can serve as your ticket for an airline ...

QRScan can generate GIF image files with QR codes if you provide a simple text file with the codes you want to be used (with one code at each line). You can incorporate these QR codes in any documents ...