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comment by thundara
thundara  ·  3187 days ago  ·  link  ·    ·  parent  ·  post: 'Body Hacking' Movement Rises Ahead Of Moral Answers : All Tech Considered : NPR

You're still talking about putting done device under the skin. Wires out or no. Pretty much every organ of your body has immune cells that will be on the lookout for a metal / coated coated object.

For example, single cell neuronal recordings are done with electrodes that pick up on the induced electrical field of those cells firing. No breaking of cell membranes involved. But they are still notorious for losing signal after a month (in mice) as the glial cells in the brain form a scar around the device.