Two days ago I implanted a neodymium magnet into the tip of my ring finger on my left hand. I'll document my experiences during and after the healing process in this thread, and answer any questions you may have.
WARNING: All following images are graphic and contain blood. I documented as much of the procedure as possible. If you cannot handle these kinds of pictures, do not view them.
FAQ
Why?
Because it's awesome.
What does it do?
The fingertip is one of the few locations in the body with a very dense collection of nerve endings. Once healed, the magnet will vibrate in tandem with nearby magnetic fields, giving me the ability to sense the shape, strength and frequency of these fields. Call it a "6th sense", if you will. Examples of fields are power outlets, high voltage power lines, railway electrical lines, stoves, etc.
Furthermore, I will be able to pick up small metallic objects and I'll have the ability to tell whether an object is magnetic or not.
All of these things could prove extremely useful as an electrical engineer.
You are crazy, go seek professional help
I believe we should experience as much as possible in our short lives and this is definitely one of the coolest things I've ever done. So no, I don't think I require professional help, I'm merely thinking outside of the box.
Won't the magnet degrade?
The magnet is coated in silicone, so it is non-reactive to living tissue. The magnetic properties will not degrade unless the magnet is subject to extremely high temperatures or very strong magnetic fields (such as an MRI).
Won't the magnet destroy my credit card/other things?
No, it is too weak to erase a magnetic strip or to interfere with wireless communication.
What about an MRI?
There is a story of someone with the same kind of implant who got an MRI and forgot about the magnet. Contrary to popular belief, the magnet did not rip out of his finger, it merely vibrated intensely and heated up a little.
How much did it cost?
I paid around 100$ for the magnet, the operation was performed by a good friend (a trained surgeon) for free in their basement.
Why the ring finger?
In the off chance anything does go horribly wrong, the ring finger on the non-writing hand is the least used finger.
What can go wrong?
It's a relatively safe procedure. From what I've heard, there's a 10% chance the magnet could be rejected from the body rather than being encapsulated with scar tissue. A lot of puss and pain ensues and a second operation is recommended to remove the magnet. The body usually accepts the magnet when inserted a second time some time later.
The first generation of magnets had an issue where the silicone layer would completely dissolve, exposing the neodymium metal undereath. The body would begin to eat away at the magnet, swelling occurs, and you'll feel immense pain. The magnet has to be removed from the finger in this case. I'm using a third generation magnet and so far there have been no reports of the above occurring.
It is very dangerous to be near strong magnets with an implant like this (especially permanent magnets). A magnet from a hard drive could cause serious damage if it were to connect with the implanted magnet, for instance.
What about travel?
I was given an official card to prove that the thing in my finger isn't a bomb. When travelling I only need to show the card and I'm good to go.
The Procedure
WARNING: These images are graphic and contain blood. Do not view if you cannot handle these kinds of images.
First, a local anesthetic is injected on both sides of the finger. The two holes are still visible in this photo:
http://i.imgur.com/q7LzT8O.jpg
To stop the bleeding, the finger is "clamped" using... err... professional methods:
http://i.imgur.com/4HoGQ6W.jpg
An incision is made on the side of the fingertip, then a pocket is carved out underneath the fat to make space for the magnet:
http://i.imgur.com/QE8s51B.jpg
http://i.imgur.com/Xl2NSir.jpg
It is recommended to place the magnet not directly under the fingertip but rather off to the side. This is in order to prevent the host from damaging their finger when they do a "grab reflex", such as in the bus when it suddenly turns a corner.
The magnet is inserted into the pocket:
http://i.imgur.com/YHRvpkD.jpg
The wound is stitched:
http://i.imgur.com/0pFPmoe.jpg
and bandaged:
http://i.imgur.com/BPSAuno.jpg
I found it fascinating to watch the procedure. I guess I'm immune to "butt tingling".
I can't wait for it to heal, but it's going to take a minimum of a month before I can start using it to its full potential. The stitches will be removed in 14 days. The finger has to be disinfected and re-bandaged every 2 days for the next month.
I like offending people. People who get offended should be offended. --
Linus Torvalds