亚马逊条码扫描应用程序背后的引擎

I'm working on a barcode scanning application, and there are various packages that are available that support this, such as RhoElements and PhoneGap. However, I have recently played with the Amazon application for iOS. This app has a scan engine that seems to always be parsing for barcodes, and is very quick to pick it up. I'm working on a barcode scanning application,