![](http://i2.chinanews.com/simg/hpic/2020/02-20/pic2-33133933.jpeg)
A hand-held thermal imager, like the one being used by the man on the left, can detect body temperature at a distance of 80 centimeters, which reduces the odds of cross infection. [Photo by Chen Si/For chinadaily.com.cn]
![](http://i2.chinanews.com/simg/hpic/2020/02-20/pic3-33133933.jpeg)
Baidu adopts body temperature measuring security doors. [Photo by Chen Si/For chinadaily.com.cn]