It’s been almost a year since Facebook first unveiled its ambitious AR vision called project Aria. While it was mostly about conceptual ideas and providing a “sensor platform” to developers, we never got to hear more about it — until now. A new product manual, first spotted by Protocol, describes what this prototype device might look like and what it’s meant to do. The hardware is codenamed Gemini EVT (engineering valuation test), and it doesn’t have an in-built display. So don’t expect Google Glass-like AR tricks from it. The device has four cameras and three buttons for power, capture, and…This story continues at The Next WebOr just read more coverage about: Facebook