Distributed Systems

Covid-19 Tracing via Wristbands

Jun 17, 2020

Simple proof of concepts of Covid Contrat Tracking via cheap, simple wristbands (Code is open source):

  • Sends and receives exposure beacons as specified by Google and Apple for Covid Contact Tracing
  • Rolling, encrypted, anonymous beacons
  • Compatible with Apple iOS and Android phones
  • With rolling proximity identifiers and encrypted metadata
  • Proximity identifiers and BLE addresses change every 10 minutes
  • Stores own keys for 14 days
  • Stores contacts of more than 5 minute duration
  • Upon infection upload keys to a public database
  • Retrieve keys of infections from database
    • computes rolling proximity identifiers
    • compares to stored contacts to check for exposure


Demo Video: