Their site itself has this to say about the World's first 3D pen :
Have you ever just wished you could lift your pen off the paper and see your drawing become a real three dimensional object? Well now you can!
At the outset, it is a handheld 3D printer that can release heated and rapidly setting plastic material as an extruding material. You can draw just about anything in 3D !!! Now, this is one innovation that can truly be hailed as an innovation because it signals the time when humans are finally going to leave the 2D world of paper and the computer screen to create a whole new world ! Right now, the video may show demonstrations of 3D scale models being constructed or mere wire art. However, the possibilities once this technological device becomes mainstream is simply left to the imagination ! You can visit them here and here.