The lawsuit was filed in California federal court on Wednesday
It alleges that dozens of third party apps may have been able to access personal and medical details of Android users as a result of the flaw
Dozens of US states started using the Google-Apple Exposure Notifications System technology last year
It is designed to enable public health authorities to use smartphones to help with COVID-19 contact tracing
The technology uses Bluetooth technology to alert users if they have come into contact with someone who has tested positive to COVID-19
Dozens of states started using the technology, including California, New York, Michigan, Virginia, Utah and Pennsylvania
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