Amidst the chaos and clampdowns in response to the new coronavirus that originated in China, technological companies have stepped up to help people prevent contamination. Tracker apps/ sites established in the country are now detecting and mapping neighbourhoods where confirmed cases have been reported. Two of the prominent trackers are QuantUrban, a data mapping program, and YiKuang, a WeChat mini programme. These platforms are updating their maps using official government information so that citizens can estimate their proximity to a highly contaminated area. The cities of Shenzhen and Guangzhou are covered by YiKuang or &lsquoEpidemic Situation&rsquo. QuantUrban, a browser-based programme, keeps track of nine other cities in the province.