Scanbot requires full access to your Dropbox, Google Drive and other cloud services. Here's why:
Scanbot requests access to the whole folder of some cloud services such as Dropbox because it lets you choose any folder as the target folder to upload your scans.
You can also create new folders within Scanbot to upload your scans to. Without full access we wouldn't be able to offer you this functionality. In the beginning of Scanbot we started with limited access to just one folder called "Scanbot", but many users requested to pick their target location on their own.