ZBar bar code reader Reviews

Just for an update. I had to download the source from the following link to get it to compile. http://zbar.hg.sourceforge.net/hgweb/zbar/zbar/file/5d1a09b5a8a0/zbar but, when i scan, i cant get it to work on my iphone os 3.1.3, 3 G. Does it only work on 3 GS? Thank you, ------------ before ----------- I can't get the sample code to compile. I followed the instruction on http://sourceforge.net/apps/mediawiki/zbar/index.php?title=HOWTO:_Add_a_barcode_reader_to_an_iPhone_app . I got 75 errors and 46 warning message, using SDK 3.1.3. example of the received error code is: Documents/Meguiar/myapp/zbar/iphone/../include/zbar/ZBarCaptureReader.h:48:0 /Users/Documents/Meguiar/myapp/zbar/iphone/../include/zbar/ZBarCaptureReader.h:48: error: expected specifier-qualifier-list before 'AVCaptureVideoDataOutput' Any idea? Thank you,