"This Should Trouble Us All" - Auto-Snitching COVID-Tracking Bracelets Flood Market ...."When people come within six feet of each other for a period of time," the company wrote in a press release , "the device makes an audible chirp and a record of the contact is made in the AiRISTA Flow software system."
https://www.zerohedge.com/technology/should-trouble-us-all-auto-snitching-covid-tracking-bracelets-flood-market 