It idea of a fan cellphone. Designer designed a folding fan type cellphone & proposed for it to have no buttons, with the manipulating method being the angle it is open at. e.g.) If it is opened 30 degrees, it enters a cell phone modem. Next, how about 90 degrees? It then enters Skype mode. So, he proposed the physical operating system of the mobile phone. It feels like a very artisanal and genuine piece of Japanese decoration, truly a nice looking fan and the technology takes a secondary approach here. The camera mode is one of the best uses for this device and seems practical. But the question is, is it real and how it would work in practice?