Fastest Android Barcode and QR code Scanner App

Hi. Really liked it. But there are several problems for me to use scanner.
In the burst mode without confirmation it scanes a lot of wrong codes, and with confirmation asks to confirm the same code while it's in view. If you can add option to don't ask about duplicates - I would be much appreciated.
And one more question - is it possible to build the scanner in my app directly without using the keyboard? Thanks.

Unfortunately the app is not capable of handling qr codes that are somewhat dense (carries a long text/url).

I don't get the dislikes... Maybe it is because of the music. :D This App has the best performance on Android for barcode scanning, only next to Scandit (which you can only get the SDK demo for free, and min 10 device subscription from them directly.)

need an android app development tutorial