Magnet Sense

I've always wondered what it would be like to be able to sense electromagnetic fields. It turns out that you can do it by implanting a magnet in your fingertip. While that's relatively cool, it's also kind of horrifying. Perhaps the same effect could be produced without surgery by using some kind of glove or finger sheath.

Mokalus of Borg

PS - Link via digg.
PPS - I'd be down for the glove version, thanks.