There's enough people surgically implanting small magnets into their fingertips for a surprisingly detailed Wikipedia article to be a thing: https://en.wikipedia.org/wiki/Magnetic_implant Also some interesting, mostly¹ SFW but not for the faint of heart, images of the DIY surgery: ::: spoiler Images  (Note: the images are unrelated, this isn't a before and after)  ::: ¹ meaning you will probably not get in trouble in most companies, there's a little blood and that's it