Sometimes a captured person can be forced to disclose a password for his online services. It would be useful if those services have the ability to set up an additional password, which can tell the service that it is being accessed in an illegal way when this special password is typed instead of a normal password.
Imagine a person having to log in to Gmail and send dictated e-mail at gunpoint. By logging in with the second password, Gmail is expected to automatically send pre-defined e-mails to pre-defined addresses (like
I'm busted, don't trust this account) and discretely append similar text to all sent e-mails (without the text appearing in "Sent" folder, obviously). It should be like TrueCrypt's hidden container, but for e-mails.
Can I set up such scheme with Google?