I am generating a QR code image using the CIQRCodeGenerator filter available from CIFilter. The image is generated fine and when it's displayed I can read the image using AVCaptureSession. However, when I try to scan the QR code using a different platform (Android, BlackBerry, iOS 6) then it doesn't recognize the image. According to Apple's documentation the generated image is compliant with the ISO/IEC 18004:2006 standard. Is the problem that I need something that is compliant with ISO 18004:2000?

Here is the code I'm using to generate the image:

```
NSData *stringData = [stringToEncode dataUsingEncoding:NSISOLatin1StringEncoding];

CIFilter *qrFilter = [CIFilter filterWithName:@"CIQRCodeGenerator"];

[qrFilter setValue:stringData forKey:@"inputMessage"];
[qrFilter setValue:@"M" forKey:@"inputCorrectionLevel"];

CIImage *qrImage = qrFilter.outputImage;

return [UIImage squareUIImageFromCIImage:qrImage withSize:size];

```

Here is a sample QR code:

![sample QR code](https://i.stack.imgur.com/ZErGf.png)

Does anybody know if there is a way to generate a more universally recognized QR code image using CIFilter? I'd really prefer not to go back to using ZXing.

Thank you!