A camera so unimaginably fast that it can take slow-motion video of light in motion. With this technology you can see around corners, or look inside a person’s body without x-rays. You could tell if an apple were ripe or if it had a worm in it, just by watching how the light behaves with the apple.
This is gonna be in your phone. Actually, by the time this technology is commercially viable for mass markets, they’ll probably just install femtocameras in your contact lenses so you can just incorporate these features into your day-to-day vision.