CamScanner is the greatest Android Apps for use phone as a document scanner.
CamScanner is a good android application from Android apps store formally known as Android Markeet. CamScanner is an android application through which you can turns your phone into scanner.
With this application you are digitize any paper documents by capturing picture.CamScanner also gives you options to share these documents through emails or share through Box.net , Drop Box or Google Docs.
I have tested this application on Samsung I9000 Galaxy S and found best result through this application. How ever application required a good light environment for scanning.
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