Add optional hash checking/confirmation upon Copy and Move
[From my email (with minor edits):]
I'm (still...) looking for an Android file manager that will generate/compare hashes of files and directories, to confirm that files and directories copied correctly to an OTG USB drive. Better yet if such would optionally integrate with the copy and move actions; with move, the source file/directory would only be removed if the hashes match.
Haven't found this functionality, yet. (I've only found "one file at a time" apps/functionality having a lot of cumbersome clicking and copy/pasting.)
Mentioning, just in case the idea appeals to you.
[Additionally:]
My primary use case: I got the largest Pixel storage memory size I could, at the time, but I still run low while out and about. (For example, when backcountry hiking where I'm not going to take a laptop.) I would like to be sure that especially my videos and pictures copied correctly to the USB drive, before I delete them from the Pixel. Or/and before a "move" action automatically deletes them.
Any pointers to extant apps with such functionality would also be appreciated -- not meaning to take away from this feature request.