[sslayer]

This would end badly - around this Thors hammer, it would rip them right out through the skin.

[curiousGambler]

And this is why I will never get a magnet implant, despite the wicked cool ability to sense active AC power lines.

[tsotha]

As would an MRI, presumably.

[spike021]

What about implanting an NFC chip and having the hammer stuck to a holder/floor as-is with a strong magnet?