Ever wanted to keep an online conversation private? Probably every now and then, right? Well, we all know this is not possible for the moment. There is just now way to be absolutely sure the data you send is only being received by the guy you're talking to. But things might be about to change, at least if you talk to Anton Zeilinger and his collegues at Vienna University
in Vienna, Austria. They have unveiled the worlds first computer network that is protected by quantum encryption
, which is believed to be unbreakable.