The document discusses emerging retail technologies for 2020, including 3D printing, mood sensing, virtual reality, and the internet of everything. It outlines how 3D printing is becoming more accessible and personalized, and how technology is working to understand customer moods in stores through facial recognition and sensors to tailor recommendations. Virtual reality is also discussed as a way to enhance the shopping experience through immersive product viewing. The internet of everything refers to the growing number of devices that will be connected to the internet and the exponential growth of data and traffic this will create.