Engadget Expand: Luidia Smart Pen

The Luidia smart pen lets you capture the motions of your pen as you draw pictures or takes notes. With 8 hours on a charge, the pressure sensitive pen (600 levels) can record motions and inputs from a 4inch by 4inch area all the way up to a4 paper size. It uses a standard ballpoint pen ink refill, so you don’t have to worry about proprietary cartridges!