"The Singapore government says the wearable device it is developing for COVID-19 contact tracing will not have GPS, internet, or cellular connectivity, so data it collects can only be extracted when it is physically handed over to a health official. These details are being offered up as the government looks to ease concerns about data privacy and drive the adoption of digital tools that can help speed up contact tracing. "
"Dubbed TraceTogether, the app is able to identify people who have been in close proximity - within 2m for at least 30 minutes - to coronavirus patients using wireless Bluetooth technology, said its developers, the Government Technology Agency (GovTech) and the Ministry of Health (MOH), on Friday (March 20)."