Microscopic camera could be injected into your body

It'll take a long while before the camera is practical, but its size extends its potential uses well beyond medicine. Researchers envision extremely tiny robots that can still visualize the world around them, or self-driving cars whose cameras are virtually invisible. You could also have 360-degree smartphone cameras that take up very little space. And importantly, it takes very little effort to make these lenses -- the Stuttgart team designed and tested its camera in a few hours. Microscopic cameras certainly raise privacy concerns (there's a real risk that people would misuse these cameras for snooping), but they also hint at a world where size isn't an obstacle to smarter devices.