https://www.reuters.com/article/us-china-health-southkorea-maps/mapping-coronavirus-south-koreans-turn-to-online-tracking-as-cases-surge-idUSKCN20I0HG

As the new coronavirus spreads in South Korea, private software developers have set up websites and apps to help people track cases and shun places where infected people have been in the hope of avoiding the fast-spreading virus.