edited February 2015 in Magnets
Using a thing layer of magnet and placing it under the tissue of your hand around your fingers and on your palm you'd think that wouldn't be possible to climb a wall like Spider-man although it is very possible with today's technology we could very likely have a widespread industry that could be of use to the military and for personal use.
This means you would have to be able to horizontaly pull 150lbs just to release one hand. It would probably be extremley difficult and extrutiatingly painful because their would be 150lbs of force compressing your skin, which would probably cause permanent damage to blood vessels, nerves, etc.
Not only that but unless the magnet where anchored to the bone structure it would most likely move in relation to your body causing internal trauma. What I mean is that the magnet would remain stationary against the metal, as your body would be pulled downwards because of gravity; causing the magnet to move inside of you.
Finally, the technology is not advanced enough to produce magnets that powerful that can be implantable in a hand. Neodymium magnets that strong are a few inches wide and thick. It might not sound that big but an object that size would be obstructive and significantly impede normal hand function. Because of this, a magnetic impant designed for wall climbing would not be reasonable.
Most walls arn't made of metal anyways, so this device would be very limited. However, a suction device should be attatchable to any smooth surface.
Like others said, it would need huge magnets and be pretty painful.
Obviously not an implant, but I'd love to play with this polymer.