  1 www.do-24.com with logo - error correction "level H" |
 2 www.do-24.com with white border - error correction "level L" |
 3 www.do-24.com without border - error correction "level L" |
 4 www.facebook.com/Do24ATT/ with logo - error correction "level H" |
 5 www.facebook.com/Do24ATT/ with white border - error correction "level L" |
 6 www.facebook.com/Do24ATT/ without border - error correction "level L" |
