Learning handwriting with an electric pen

Maybe handwriting will die out, with so many input devices (voice recognition, touch, keyboard, etc) competing for our attention. But if it doesn't, then technology could be used to help children learn.

By writing with an electric pen (either on some kind of pad, or with a position sensor), an algorithm could be used to assess words and letters for their clarity and shape, suggesting to the students which letters to practise. This would use techniques similar to OCR (optical character recognition), and could simultaneously improve OCR technology and teach students a handwriting style conducive to OCR.

Similarly, once the student has progressed to sentences, the pen could measure the speed per words, identifying words or letter combinations that need practise.