The Finnish cell phone maker has filed a US patent application for a magnetic vibrating tattoo that could wirelessly connect to a mobile device and alert users of phone calls, texts and battery status, all via vibration.
Diagrams in the patent show examples of the small, square gadget as applicable to a user's arm, abdominal area or fingernail.
According to the patent, the phone would communicate with the tattoo through magnetic waves. And the patent also suggests that it would be possible to customize the physical response depending on who is calling, similar to having a different ringtone for different family members.