password protect onedrive folders
Allow Password protection within OneDrive.com. If this is enabled enforce same protection for files synced locally to the local PC or device. Password protected folders cannot be synced unless specifically requested on the sync panel on a PC. Alternatively do not enforce password protection on the onedrive.com site, but allow files synced to local folders on a device to specify password protection required.
Jennifer Hellinger commented
Or, could you just add the ability to password protect OneDrive in general? I like to stay logged in to my Google account. If my tablet, laptop or phone is stolen, I'd like to know that my files have a bit of extra protection.