Below is a link to an interesting article about some navigation experiments with Haptic compasses.
I've never heard of a Haptic compass before, but it sounds like it could have some applications for training blind handymen to get around a bit better. You wear it for a while to fine tune your internal compass, if there is such a thing. The link is to one of my favorite blogs. There are comments below the article: www.exothermia.net/monkeys_and_robots/2009/02/04/on-the-haptic-compass/ Gary in TX
