A residential community in Beijing has introduced facial recognition technology to its waste-sorting system. /VCG Photo

The smart system allows the dust bins to be opened automatically when residents' facial information is verified by the camera, which makes the process more convenient and hygienic. /VCG Photo

A total of seven dust bins were set in the smart sorting system to hold different types of garbage including kitchen waste, paper, metal etc. /VCG Photo

Beijing announced last week that the city would follow Shanghai's steps in rolling out garbage-sorting regulations. /VCG Photo