ZBar Bar Code Reader is an open source software suite for reading bar codes from various sources, such as video streams, image files and raw intensity sensors. It supports EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39, Codabar, Interleaved 2 of 5 and QR Code. Included with the library are basic applications for decoding captured bar code images and using a video device (eg, webcam) as a bar code scanner. For application developers, language bindings are included for C, C++, Python and Perl as well as GUI widgets for Qt, GTK and PyGTK.
Most of time, i face up a problem causing crash of application
Fatal Exception: NSGenericException *** Collection <ZBarSymbolSet: 0x2839a9000> was mutated while being enumerated.
This error crash at many time apps, thanks to https://stackoverflow.com/questions/33207725/crash-on-zbarsymbolset solution.