As the title indicates, PhotoScan by Google Photos is an Android application which provides a way for scanning pictures using the camera of your smartphone or tablet. This task is rather simple. You will have to place your target photo on a stable and flat surface, and then snap a photo using this handy app. Thanks to its edge detection technology, this software is capable of performing automatic cropping to remove any unwanted space that's not part of the actual picture.
Another neat feature is the rotate function which, as you expect, lets you rotate the photo over and over again. The fact that you can scan the photos without facing too many problems, helps a lot later because you won't have to edit stuff. Moreover, now you can protect the scans by having them stored safely on the Google Photos platform.