Take a picture of a document with
Qt’s camera, email it as PDF.

DocScanner has got industry leading (link to a benchmark test) image processing algorithms which automatically turn the picture to look like you have scanned the document with a flatbed scanner. Document gets automatically recognized within the view finder in real time.
Using custom algorithms DocScanner corrects perspective, whiteness, noise and other parts of the image to produce beautiful and clear scans.

Use DocScanner to capture whiteboards and receipts, digitize your Moleskine notebook to a PDF-file or Evernote.

DocScanner is not limited to paper documents only. You can use it to make clear captures of meeting notes on a whiteboard and later on include those to your presentations. You can scan multipage documents such as your whole Moleskine notebook. It is great for scanning receipts of your business expenses.

Use Evernote as your second brain.

If you are unfamiliar with Evernote, it is a cloud storage service for documents with lot of additional document related functionality, such as search and handwriting recognition. We happen to love Evernote and use it by ourselves. We have been working closely with them to make DocScanner the best Scanner App to feed your Evernote account. DocScanner can be found in the Evernote Trunk too. You can set Evernote account up for free or buy their premium plan.