AN ITCH YOU CAN’T SCRATCH

Your skin can vibrate when a call comes in, if Nokia’s patent on “smart tattoos” becomes a commercial reality. You can program different vibrations for different callers. A printed circuit that reacts to the magnetic field produced by incoming calls can be worn as a stick-on or tattooed directly on someone‚Äôs skin, using ferro-magnetic ink. (We think we saw this movie.)

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