Comment by avirambm

You can use Docady's scanner that also does OCR and recognizes its content. It then stores your documents and encrypts them. At the moment it's available on iOS, but should be available soon in Android too.

Demo: https://www.youtube.com/watch?v=cN_Zw6xoUaw

App: https://itunes.apple.com/US/app/id921250909?mt=8

(Full Disclosure: I work at Docady and part of its team)