States are finally starting to use the Covid-tracking tech Apple and Google built — here’s why

Apps created with the technology don’t collect or store any personal information like the user’s phone number or location. Instead, every phone with a Covid alert app sends out Bluetooth Low Energy signals to detect if two people were close together for an extended period of time. Every day, each phone in the system downloads a list of anonymous tokens corresponding to positive tests, and compares them with tokens on the phone collected when the user was near another person for a certain period of time.

Link: States are finally starting to use the Covid-tracking tech Apple and Google built — here’s why
via http://www.cnbc.com

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