Some Chinese cities have urged all passengers to register with real names when taking public transportation to curb the spread of novel coronavirus.

Nanjing in East China's Jiangsu province issued that from Monday all passengers taking taxis must scan QR codes that have been put in the city's 12,000 taxis. Passengers' ID information will be collected to trace suspected patients and prevent the spread of the virus.

People who do not carry cell phones or have difficulties in using phones can ask taxi drivers or other staff members to register by cell phone on the internet or by writing information on notebooks.

Shenyang in Northeast China's Liaoning province urged all passengers from Thursday to register with real names when taking public transportation, including buses, metros, tramcars and taxis.

Some cities across the country, including Guiyang in Southwest China's Guizhou province and Changchun in Northeast China's Jilin province, also regulated that people must register when taking public transportation.