Binary Eye APP
Uses the ZXing ("Zebra Crossing") barcode scanning library. Supported barcode formats are: AZTEC, CODABAR, CODE 39, CODE 93, CODE 128, DATA MATRIX, DX FILM EDGE, EAN 8, EAN 13, ITF, MAXICODE (partial), PDF417, QR CODE, Micro QR Code, rMQR Code, RSS 14, RSS EXPANDED, UPC A, UPC E, UPC EAN EXTENSION
This is open source:
https://github.com/markusfisch/BinaryEye