Indeed, E Ink has identified 700 types of products that could use its technology, including power tools (which could show the amount of power remaining) and car key readers (which could report such details as the amount of gas left in a car and the vehicle's location in a parking lot).

FORBES: Screen Gem

The company provides hardware, software and services for connecting utilities with devices on a power grid, including advanced metering and faster detection of outages and tools to improve the reliability of electrical grids.

FORBES: Silver Spring Networks Preps For $63 Million IPO With Roadshow