I worked for Wacom up until 4 months ago, and I was involved in the development of this product. I'm not sure how much I can talk about this without violating

I worked for Wacom up until 4 months ago, and I was involved in the development of this product. I'm not sure how much I can talk about this without violating NDA, but I'll try. Normal Wacom tablets use electromagnetic resonance (EMR) to both power the electronics in the pen and to locate it in 3D space. Inkling uses the same technology for pressure sensitivity in the pen tip, but location is performed by a different method, using the base (the part you clip on). It's not nearly as accurate as EMR coupling (the tablets are accurate to less than 1mm), but the ability to record an ink drawing is pretty awesome. No matter how well natural media is simulated, it's never going to be actual real paper and ink.