ZXing (pronounced "zebra crossing") is an open-source, multi-format 1D/2D barcode image processing library implemented in Java. Our focus is on using the built-in camera on mobile phones to photograph and decode barcodes on the device, without communicating with a server. We currently have support for:

* UPC-A and UPC-E
* EAN-8 and EAN-13
* Code 39
* Code 128
* QR Code
* ITF
* RSS-14 (Stacked and Limited)
* Data Matrix ('alpha' quality)
* PDF 417 ('alpha' quality)