The QDX Key is their ID card. From the April 16 video.
33:42:00 The picture that you 33:44:00 see appear, I'm still practicing on 33:46:00 where my thing is, actually ties to 33:49:00 what's called our qdx key card and that 33:52:00 card actually uses quantum dots to 33:53:00 actually make that picture that's on the 33:56:00 card and that signature I was talking 33:57:00 about, is embedded into that facial image 33:59:00 that's actually in the card there in 34:01:00 inking process that creates the 34:04:00 particular card. So you get both a 34:06:00 digital representation and a physical 34:08:00 representation of that card that's 34:10:00 secured by the qdx platform technology.