Hi there,
I think it would be great if I have a way to encrypt/hide a single file. I'm suggesting it because I can't move this file.
My use case is this. I use Sparrow as my email client and on my job's Mac I want to encrypt my personal email accounts when I'm not at the office. Currently I can encrypt ~/Library/Application Support/Sparrow and this would hide Sparrow's data, theoretically. Upon testing I found out that Sparrow keeps the account list in a file (com.sparrowmailapp.sparrow.plist) inside ~/Library/Preferences so even with the Sparrow data "locked" when I open the app it recreates the emails because it access all the accounts.
The idea is to be able to hide this file when the ~/Library/Application Support/Sparrow is locked, so that it only have work related email accounts. This feature could be an option inside the Folder Info (the little "i" in Espionage's window) saying "hide these files when this folder is locked". When locked Espionage would put a file that was there before the lock, just like it does with folders.
Hope you guys like the idea. It would be awesome to me.