Is nothing sacred any more? Money quote:
So long as the user writes on paper printed with a special pattern, the smartpen transforms what is written into interactive text. For example, the pen has a recording function, called paper replay, that can record sound and connect it to what the user writes while the sounds are being recorded. Later, the user can tap the pen over what she wrote and replay the associated sounds. "We're starting to make the whole world of printable surfaces accessible and functional," says Livescribe CEO Jim Marggraff.