Can I use Espionage with an external drive?

Yes. Some things you should keep in mind:

• Make sure to lock the folder before ejecting the disk.
• If you want to the folder between multiple Macs, then both machines should have Espionage installed. You must import the disk image into Espionage on the other mac using the password for the disk image (not your master password). You can get this password by clicking on the "Copy password" button in the folder details. You import the disk image into Espionage by dragging it onto Espionage.