The system also scores the amount of time you are investing in external relationships, based on the frequency of emails, and whether there is reciprocation in those relationships, judged by how long you wait for responses, and if they arrive.

FORBES: How A Very Familiar Technology Got a New Lease of Life

The engineers found a way to kick-start a radio-frequency device wirelessly using an external power source initially, but running the device afterward on the output of power generated by the inner ear.

WSJ: Harnessing Energy From the Body to Power Devices