Nokia is taking phone notifications to an extreme with a new patent, tattoos that react with your phone using haptics, the same vibratory interaction that you experience when typing on a touchscreen keyboard. A recent submission to the United States Patent and Trade Office describes a haptic material that would react to magnetic signals sent out by your mobile device. So you set your phone up to let you know when a call is coming in, the phone then emits a specific magnetic signal, and the material reacts by vibrating. Different signals could be assigned for different functions.
Initially, the patent explains that users would wear the material on clothing, stick-on patches, etc. However, it goes on to apply the functionality to magnetic inks, which can then be embedded into the skin in the form of tattoos. That process gets a little more involved, first demagnetizing the ink, applying the tattoo, then magnetizing it once again.
It's a wacky, creepy kind of idea that one would expect from an old sci-fi comic, but it's also feasible enough to become a reality. So if you're someone who really hates missing calls, this could be just the thing for you. That is, until you decide to trade in your Nokia for the latest HTC device.