Three states plan to develop contact tracing apps using a system designed by Apple and Google. The two tech rivals rolled out their exposure notification API yesterday, which would give users an alert if they recently came into contact with someone who tested positive for Covid-19.
The system uses a smartphone’s Bluetooth antenna to track when two people are less than six feet away from each other and saves that proximity data as an anonymous key. If someone tests positive for Covid-19, they would upload their positive test result into a health app, which would then alert everyone they had recently encountered. Read More: MedCity News