I scanned the QR code and then pressed next/back a few times and then it said connected on the screen. Then I wasn't sure where the demo was even though it said to try it out. I eventually saw the little link at the bottom right hand side and clicked on it. Then it presented the slides but kept going automatically very sporadically and nothing I did stopped or moved anything.
You might want to give a better walkthrough and explanation. :) Really cool though if it is solid. You have to be careful with slide control because this is LIVE and people want things that are absolutely solid and going to work 99.99% of the time. One mishap and you've probably lost that customer if it was in a live setting.