You can implant a small magnet in your fingertip and then have the ability to sense magnetic fields.
this post was submitted on 30 Sep 2023
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Showerthoughts
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Get ready to make friends with every TSA agent you see for the rest of your life, and pray you never need an MRI.
It doesn't even have to be a finger. There are so many underused parts of the body
Why do I feel called out by this comment