He did that some month ago when I started my Magic Stickr Web AR project, it was a really good performance in the green screen room of the Vancouver BC Tech the Cube coworking space.
Print the QR code and scan it with your mobile.
When you open the QR code URL, point the QR code again with your phone to watch the hologram.
Scan the QR code above with your smartphone, enter the webpage that pops-up and point the virtual QR code card below. (grab the virtual QR code to rotate it)