Hong Kong will impose a China-style COVID-19 app on the city's seven million residents, sparking fears of ever-increasing state control over the movements of individuals. The city will start putting electronic bracelets on those who test positive for the virus from July 15, health secretary Lo Chung-mau told a news conference on Monday. In China, red codes banning movement in public places have already been used to target people for political reasons that have little to do with their health. Chief executive John Lee said the city needed to "be realistic" about the kind of risks it could be facing,...