As great as it seems, this concept is seriously creepy because it powers itself by converting the glucose and oxygen found in blood into electricity. Though somehow getting your blood sucked by a gadget is worth it for the endless potential applications. I'd probably just end up using it to moderate comments, but what would you do first with your implant? [Core77 via Geekologie]

This week, Gizmodo is exploring the enhanced human future in a segment we call This Cyborg Life. It's about what happens when we treat our body less as a sacred object and more as what it is: Nature's ultimate machine.

Jim Mielke's concept would be implanted beneath the skin on your arm. It then taps into your bloodstream, converting the oxygen and glucose into electric power. The display then "works" by changing the color of smart-ink pixels tattooed over the implant. It also acts as a touchscreen input device, so you could manage your cellphone calls by tapping on your arm. Most creepily, there's potential for a 3G video call to be shown on your skin.

What with this blood-powered idea, the urine rubber and the blood pen, there's clearly a rich vein (ahem) of bodily-fluid-related ideas out there for inventors to tap into. Let's hope this one remains just a concept, though: I'd hate to have to shave my arm to get good quality video from my tattoo. [Core77 via Geekologie]