content: This isn't a product, it's a tech demo showing what's currently possible with materials and technologies we have right now. Think about all the cool stuff here. You need to have solar cells that are not only mostly transparent but powerful enough to power a microcomputer with a digital display. You need to have said microcomputer downscaled in size enough to be embedded into sunglasses, the capacity to dynamically render images in an arbitrary surface, and more. More sophisticated ideas could things like having the glasses capable of dynamically overlaying a map of your given location, or create a sort of driving hud. The glasses could interface with vehicles and show the map as well as vehicle indicators - speed, mph, maybe even add in a radar detector interface showing visually the exact direction the signals were detected from. That's just with half a second of though. I'm sure there's many more interesting possibilities for a creative entrepreneur.