NFC powered lights
A while I ago discovered these NFC powered lights. Basically you put them near your phone etc and they light up. Given how small they are, and how they are powered wirelessly from a normal phone, I thought they would be ideal for implanting.
There is one problem with them though, since the range is tiny, if you put your phone over them to power them, you will not be able to see them. and you can't put the phone behind the light to power it because your arm etc is too thick, they won't get enough power. To fix this I removed the LED and attached it to a ~1.5 inch wire, so that it could be seen even when a phone is covering the reader.
I have made 3 of these devices, but not yet coated them, the plan is to coat them in implant grade silicone
What do people think of them? does anyone want one of the prototypes to try it out?
PS: I was already building this before the other RFID light thread, but it is pretty similar to what was suggested there.
I've got a few ideas on how to implant such a thing. One long incision with a larger pocket at one end for the antenna (this is assuming that the entire device isn't in a single-width silicone block) is one way.
Depending on the width of the bulb and wire-enclosed bulb segment, something like a 6g piercing needle could be used, too. You'd make an initial incision and pocket for the antenna, then run the needle from inside the pocket for a length at least the 1.5 inches, then let the needle tip break back through the skin and pull it through the channel leaving just the inch and a half section still in the skin. Then you'd feed the bulb and wire into the needle and seat the antenna into place. Now you'd pull the needle the rest of the way through, leaving the bulb and wire behind. Close with a few sutures at the antenna pocket (and maybe one where the needle left the body). This way would leave less area to risk invasion by nasties from the outside while it healed, but would involve, perhaps, a tiny bit more internal damage than a single long incision. I've got some 6g 75mm piercing needles here that would do the job (that's assuming that the bulb/needle segment is less than 3.7mm in diameter, though). There's also the possible risk of damaging the silicone while feeding the bulb into the needle. Hmmm...
Is that kind of silicone safe long term?