If you want to carry a writing utensil, the Inka Pen looks like a good option though I have not tried it.

http://www.writeanywhere.com/inkapen.html

Jeanette Isabelle
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I'm not sure whose twisted idea it was to put hundreds of adolescents in underfunded schools run by people whose dreams were crushed years ago, but I admire the sadism. -- Wednesday Adams, Wednesday