Mount USB Drive under One User Let's say we have a Mac configured with three user accounts:

alice
bob
chuck


When Alice logs into her account, she connects a USB drive that contains files she needs to work with. Bob logs in at the same time and realizes he can access her USB drive through Finder. He has full permission to view and edit her files.

How can Alice mount her USB drive in a way that only she has access to it?

Environment


Mac OS X 10.10.5
USB drive (FAT32)


Thanks
If you format the drive as HFS+ (essentially Mac formatted) you can set permissions on it (which any admin user can change of course). If it is anything else (PC formats: FAT, exFAT, etc.) you can't set permissions

Probably the best thing would be to put an encrypted DMG on the thumb drive. Anyone could get to the DMG but only the person with the correct credentials could open it.