Foot-Powered Laptop

mrd98 writes: "There is an article in the Register about a U.S. developer who has created a foot-powered device which can be used to charge laptop batteries. Apparently 5 minutes of brisk pumping will give you 20 minutes of battery life, it can also be used to power most other electrical devices with a rechargable battery."

Comments

It could be invisible

[Spamalamadingdong]

There are a lot of things your clothes do to absorb energy that you don't notice. You don't want the soles of your shoes to be too springy, for example. If you can put some of the absorbed energy to good use instead of turning it into heat, you'd never notice the difference.