An inflection point may be coming for the imaging chips known as CCDs, which are in pretty much every video camera out there. They are getting super-cheap to produce. Cory Doctorow ruminates about the implications:
If I hang one over my kitchen table will it be able to count calories for me? Can I hang one over my desk and not need to buy a scanner? How about one in the bathroom? How much health information could you extract from an image taken every morning? Could it track my weight? Detect signs of depression? Obviously there are security and privacy concerns.