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).
QR Code Contact Tracing for COVID-19 Contact tracing using QR codes scanned by mobile devices at checkpoints (e.g., taxis, building…
Bluetooth Contact Tracing for COVID-19 Automated contact tracing using Bluetooth “chirp” signals from mobile devices uploaded to a database after…
Cell Tower Contact Tracing For COVID-19 Contact tracing using cell-site location information (CSLI). Precision varies greatly and might be only…