Screening demonstration test held at Tokyo Big Sight in Japan (12)

A man acting the role of a spectator put a special sticker which changes its colors under different temperature conditions on his wrist as a temperature measurement during the screening demonstration test at Tokyo Big Sight in Tokyo, Japan, Oct. 21, 2020. Tokyo Organising Committee of the Olympic and Paralympic Games held a test of spectator and Games official screening measures on Wednesday, testing a number of different measures, including COVID-19 countermeasures, currently under consideration for deployment at pedestrian screening areas for spectators and Games officials during the Games. (Xinhua/Du Xiaoyi)