By Cho Jin-seo
Staff Reporter
Nam Jeong-gyun picks up a glossy black pen and writes in the air as if writing on an invisible whiteboard. The pen has an electronic sensor at the tip, he says, so it can record every movement into a tiny memory chip located inside the streamlined body.
``Let's say that an important idea suddenly hits you, but there is nothing to write on, and you know that you'll lose the idea if you don't record it right away. This pen, allows you to write on any surface, storing everything you write,'' he told spectators at the graduation exhibition of Samsung Art & Design Institute (SADI) held two weeks ago in Seoul.