Sounds like a great idea at least in principle - if you're typing a password, tell the special password keyboard app where you expect it will go, and then firewall the app from sending it anywhere else.<p>In practice this app sounds like it's at least as large a security hole, if not more:<p><i>ScreenPass guarantees that users always input passwords through the secure keyboard. It does this by using computer vision to periodically scan the screen for untrusted keyboards.</i><p>No thanks, I'd rather not.