GPS Contact Tracing for COVID-19 Contact tracing using GPS radio signals. Accurate to between 1 to 20 meters, but might…
Wi-Fi Contact Tracing for COVID-19 Contact tracing using Wi-Fi router locations. Can be combined with GPS or Bluetooth signals).
Bluetooth Contact Tracing for COVID-19 Automated contact tracing using Bluetooth “chirp” signals from mobile devices uploaded to a database after…