Would it be possible to get the messages if FB&#x2F;WhatsApp decided to do so? I heard they started doing end-to-end encryption, with the keys only on the user&#x27;s phone.<p>Also, if you&#x27;ve designed a system like this, could you also design one where you&#x27;d be unable to comply with the shutdown order? I suppose one of the Bitcoin related message services would be like that.