Watch the magical touch screen in Chinese metro

The magical touch screen in Chinese metro is used for displaying information about weather, and the metro routes

The screen is a transparent touch screen, 55 inches in size, and works using OLED, used for displaying information to passengers.

Watch countries that utilize drones in warning people about Corona Virus

 Korea use drones to show warning messages about Corona Virus, as social distancing and the importance to wear a mask.















China use talking drones to warn citizens about social distancing
https://edition.cnn.com/videos/health/2020/02/01/china-talking-drones-coronavirus-nr-vpx.cnn