At the new Google X event project, http://www.wesolveforx.com/, Pixel Qi CEO and founder Mary Lou Jepsen presents the idea of recording images from the human brains memory. With a bit of investment in the right technologies to record higher resolution signals from human brains, it can soon be possible to record images from human memory. As far as I understand the presentation, you can soon wear some special glasses that have small sensors on your retina, or some sensors on your head, then just think of some images and those can get recorded with high detail and precision. Seeing an image and thinking about that image is the same thing, our brains record every image that we see for ever with great detail and it is soon be possible to read from our brains visual memory.