Lernstift is the vibrating pen that critiques your spelling (video)

One reason that we prefer keyboards to pens is the dignity-saving presence of a spell checker -- but that won't help your average schoolchild, obligated to learn their language scrawling on dead trees. Now, a pair of German inventors have developed Lernstift, a learning pen that'll ruthlessly nag you into improving your spelling and handwriting with the power of vibration. Packing a stripped-down Linux system with a non-optical motion sensor, it'll work out what you're writing and buzz you if it...