The pen technology you saw demonstrated today was the Sky wifi Livescribe pen - very cool stuph which might be quite useful for any student....Here's a sample of what can be done:
Here's their site (We like the Sky more than the Echo or the 3 - but you might feel differently!)
http://store.livescribe.com/?gclid=CjwKEAjwkf-gBRCd-b2m2aOo0EQSJABMeQDkRZODjbftU9hsBxxbhwV-CrG1nKjBRLhVchyGLZ2RWBoC2Kfw_wcB