Amidst the deadly coronavirus outbreak, China has launched an app that warns people if they are at risk of the virus. The 'close contact detector' app alerts users if they have been near a person who has been confirmed or suspected of having the virus. The app was jointly developed by government departments and the China Electronics Technology Group Corporation. The technology works on the Chinese government's close surveillance of its population. To make an inquiry, users scan a QR code on their smartphones and register with a phone number, their name and their government ID number.