Is there a barcode scanner SDK that works with iPad 2?
I've tried RedLaser 3.0 (I have an account through them) and they don't have native iPad 2 app support... only iPhone apps run on the iPad 2 work. I also tried an iPad 2 hack of ZBar (open source) and although it works, it doesn't work very well.
Any other options out there?
Scandit SDK barcode scanner from Mirasense. Their latest version was updated to optimally support the iPad 2.
ZBar is the best to use. There are a post about it. The unique difference of zbar to iphone and ipad is the screen size, so it is a "little native". But take in mind that the camera of IPad 2 is very bad.... The iPad 2 have 0.7 MP camera (back) and 0.4 MP (front), so will be dificult decode same symbols. It even didn't have autofocus. Only to say, the first iPhone have a 2.0 MP. (Today is 5.0 MP)
Test with a iPhone program in your iPad if it decode what you want (make no difference the result). If it work, be happy, if not, next year buy the iPad 3.
--Edit--
Now the ZBar suport iPad 2
You might want to take a look at ScannerKit. It's available for both iOS and Android.
ScannerKit for iOS: http://shopsavvy.mobi/sdk/
来源：https://stackoverflow.com/questions/5916385/is-there-a-barcode-scanner-sdk-that-works-with-ipad-2