 We're here at the ID TechEx show with PST, this is Professor David Britton. David, tell us what you're up to. OK, well what we have is a printable silicon temperature sensing technology. So everything here is printed and one particular application we have demonstrated here with thermal imaging maps, which is connected wirelessly to the computer. So if I take the nice warm water and I put it onto here, you see it reads the temperature display there. Oh yeah. How sensitive is it? What's the temperature? This one will activate at any temperature, but it's typically about on that would be about 0.1 degrees Celsius resolution. But of course this is just a visual display so you can't actually see it. The other application is which we actually produced with other partners for you last year. The battery is a little bit weak so I'm going to make sure it's connected. This is the switch. It says use five cents a cup so I have five South African cents. I connect it there and when it's connected, would you like to pass me the hot water? Maybe just put it onto the sensor. It's already reading warm and it's probably actually going to go to hot. Yes? Oh yeah. And now if we take it off it'll come down again. So you make the printed sensor here? Yes, we make the printed sensor. And all it's doing is this is a hybrid system. So there's an EM microelectronics chip which has been programmed so it's reading the analog to digital input. And there's just three levels. So if it's below, the output is below certain voltage, it will read cool. Within a range from warm and above then the coffee or in this case the water is too hot. Excellent. Very cool. Thank you.