TOPIC: Crank-Up Electronics
During times when batteries may be in scarce supply, crank-up products may be just the thing. This is a technology in use in the recent past, when phone calls were placed only after an energetic cranking. Crank Radios such as BayGen are On the Market. Shaking a Flashlight or just a Squeeze can create energy to replace batteries. Short wave Internet transmissions can be sustained by crank power. Generators can be powered by hand or foot, or could use Gravity.