Table 2.
Technical summary of some of COVID-19-tracing applications [12].
| Centralized/Decentralized Application | Country/state | Application Name | Embedded Proximity Measurement Technology |
|---|---|---|---|
| Centralized | Alberta, Canada | ABTraceToghegher | Bluetooth |
| Part of US states, and EU (except UK & France(planed)) | Apple & Google SDK | Bluetooth | |
| Austria | Stopp Corona | Bluetooth | |
| HongKong | Stay Home Safe | Bluetooth, Wi-Fi | |
| Vietnam | Bluezone | Bluetooth | |
| Decentralized | State of Dekota, US | Care19 | GPS |
| State of Utah, US | Healthy Togheter | GPS | |
| Germany | Corona Data Donation | GPS | |
| UK | NHS App | Bluetooth | |
| China | WeChat & Alipay | QR Code, Big data | |
| Singapore | TraceTogheter | Bluetooth | |
| Australia | COVID-19safe | Bluetooth |