I’m working on a solution to that problem (although an implanted version with wireless charging would be just as valid)
I had this magnet implanted in my arm. It has two crescent shaped magnets inside that are opposite polarity. With a careful mounting plate setup I can adjust the padding, thickness, and magnet strengths to dial in an ideal pull strength that will keep the electronics on my body, but distribute the force enough not to cause tissue necrosis (taking it off at night).
