JoshiSoft - JSCScanBarcode Barcode Scanning utility application.
Allow to scan UPC/EAN, CODE 39, CODE 128, CODE 93, CODABAR, Interleave 2 of 5 or QR-CODE Barcodes and displays barcode data and barcode length.
Download document from http://www.joshisoft.com.au/JoshiSoftJSCScanBarcode_iPhoneDoc.pdf