I have integrated the ZBAR sdk in my project and it is working fine for barcodes but it is not detecting the QRCodes. I am using the iPhone 4s and I don't have any other device.. is this a known issue..? I am using the ZBarReaderViewController...
Double check that the scanner is configure for reading QR codes. Check my example below:
ZBarImageScanner *scanner = reader.scanner;
[scanner setSymbology:ZBAR_QRCODE
config:ZBAR_CFG_ENABLE
to:1];