Ahhh the movie plots for the future I see coming. Anyways this is an app you can run to encrypt text that can only be un-encrypted if all the parties involved agree to provide their keys. Reminds me of the 2 keys to launch a nuke you see in a movie.
http://www.ghacks.net/2014/01/05/create-encrypted-text-can-decrypted-combining-shares/