Having a scanner in your mobile, what can be better than that. You can scan anywhere anytime, whenever I feel to keep a digital copy of important documents for future reference I just scan it using my CamScanner. One of the best feature of it that you can convert the scan documents in pdf format which is widely accepted extension for documents.
Its gives a very minute selection tool while scanning where you can extend the dots to the edge of the documents for a perfect selection. Once the scanning is done it gives multiple filters option like auto, original, lighten and etc which you can choose as per your requirement. Once you are done with all this you can share the scanned documents in pdf formats through your email, only drawback is it put a line at end of the documentscanned by CamaScanner but you can live with it.It also provides lot of mode during scanning like ppt, ID, document and greeting card where you can place any image within the selected section and scanned it which will gives you a nice e-greeting card document.
CamScanner also provide cloud storage if you signed up through the app. It creates a storage of 200mb in their online site http: //camscanner.com which you can access from anywhere and any device.
Overall its a great portable scanner to have in your mobile.