The Digital Tattoo Interface imagined by Jim Mielke (United States) was entered the "Greener Gadgets Design Competition 2008" initiated by Core77 and Greener Gadgets, and although it didn't win, it was featured among the most notable entries.
"The
Digital Tattoo Interface wants to be a mobile phone / digital computer
implanted in your arm and it should work with your own energy, i.e.
your blood. It uses an e-ink display tattooed on your skin, a display
that appears, disappears and changes itself according to what you need
it to do. So it's a green concept that is actually more red and blue.
Jim Mielke's device is also Bluetooth enabled and can detect blood disorders, alerting the owner when a health problem is discovered."
"The
Digital Tattoo Interface wants to be a mobile phone / digital computer
implanted in your arm and it should work with your own energy, i.e.
your blood. It uses an e-ink display tattooed on your skin, a display
that appears, disappears and changes itself according to what you need
it to do. So it's a green concept that is actually more red and blue.
Jim Mielke's device is also Bluetooth enabled and can detect blood disorders, alerting the owner when a health problem is discovered."