This is ad free (no ads) version of the app:
https://play.google.com/store/apps/details?id=com.altrigit.qrscanner

There is no need to take a photo or press a button. To scan a QR code or barcode simply open the app, point the camera at the code, and await a few seconds.

- Scanning and generating QR code
- QR code styling and app lock
- View Scanned & Created History
- Unlimited export and CSV
- Fast and secure batch scan

Supported formats: Quick Code, EAN 8, Code39, EQS, QRCode, Data Matrix, Code128.

Terms of Service: http://altrigit.com/tos.html
Privacy Policy: http://altrigit.com/privacy.html