InternationalSingapore Develops Smartphone App for Tracking Covid-19 PatientsTestHostEntryMarch 21, 2020June 3, 2022 by TestHostEntryMarch 21, 2020June 3, 2022 The app is enabled to identify people who are close within 2m for at least 30 minutes to coronavirus patients SINGAPORE| On Friday, a contact-tracing...
