How to make an iPhone completely invisible

Imagine a smartphone that remains “cloaked” until its owner whispers a pass phrase. It’s an incredible concept, but could it be that the ultimate smartphone security feature is invisibility?

If you think that sounds crazy, how about rendering an entire car or a space ship invisible? Even crazier, it’s rapidly becoming science fact rather than science fiction. And that’s because it’s not only been shown to be possible within the laws of physics, but it’s being worked on by scientists and researchers right now.