AntiMap — open source Android software to gather arbitrary data and visualize it. This enables you to be a 21C Francis Galton, the man who walked the streets of England using a pin to prick holes on a cross of card in his pocket, all to keep track of the relative average beauty of women in different parts of the country. He was such an obsessive data gatherer that, during one particularly boring meeting, he kept track of fidgets from each of the other meeting participants. Now you can too.
The Internet of Things That Do What You Tell Them: Cory Doctorow passionately explains how computers are already entwined in our lives, which means laws that support lock-in are much more than inconveniences.