Implant Chip
this dome-shaped nub was developed for carrying sensitive or classified information on a tiny chip that was implanted just below the skin. When the flat side of the nub was placed against the skin and pressed, it injected the eyelash-shaped chip into the skin. Because of the chip's size, it was virtually impossible to see, and didn't show up on most bioscanners. It could be extracted at a user's destination, and the information retrieved from the chip.