Ambient bus arrival monitor from hacked Linksys WRT54GL | John Graham-Cumming.
This is cool. Why, you ask? Well, because it’s proof that opening up data, or the application programming interface (API) that allows one to interact with data on a particular system, can lead to really cool things — hacks, if you will — that the service provider never considered. There are thousands of ways that data can be harvested and put to a use different than how it was originally intended. You just have to let the hackers hack.