It’s called, “Looking for feedback” R-Tard. Besides, this video doesn’t explain everything in detailed about this particular “innovation”. I don’t find it? innovative but intriguing. It’s not just a tattoo, it can be a spray or an invisible tattoo that could be small and applied to the finger or finger nail and it doesn’t have to be permanent. It also acts as a password for your phone. As I said, this video doesn’t go into details, read an article on it and then make your thoughts.