"In a recent filing to the U.S. Patent and Trademark Office, Nokia () described a concept for using magnetic ink embedded in the skin to interact with a specific electromagnetic field put off by mobile phones."
That's right. No more missing phone calls because you didn't hear your phone ring or didn't feel it vibrate from wherever it may be. Alerts to your phone can be transmitted to the ink in your skin, and can even be varied to differentiate between calls, messages, emails, etc. And for those not ready for a tattoo, Nokia proposes a badge or label that can be applied to skin temporarily.