super fast flashing leds have painted pictures or text in the air for a couple of decades now, but lightverte moving instead. something they are naturally doing all the time. for what purpose? well, enormous adverts, for a start. we've created a new type of projection technique for creating persistence of vision displays and we patented that globally and what that lets us do is scale up the size of the display massively. so, with leds and other light sources, it becomes challenging to create a display that's more than say three metres tall. but with our echo technology we can create a display that's up to 200 metres tall, effectively turning entire skyscrapers into the world's biggest image machines. and that's why if you've been walking down a particular street in berlin last monday, you might have seen my face out of the corner of your eye. do you think this is safe? do you think this is too distracting for drivers, for example? it's very important that we introduce it in the right way and it's not going to be for every location. i certainly wouldn't want to introduce this medium next to a