twoknee
I imagine the plaintiff simply assumed it was legitimate without investigation, i.e. it was a successful troll.
Here's my crack at it for fun:
Exposure Notification apps are a privacy preserving technology to help prevent the spread of COVID-19.
They don't collect or log any location data which is what makes them private.
Instead, a phone equipped with the app will continuously log and broadcast random tokens that change every 15 minutes.
Nearby phones with the app will take note of the token and the signal strength, while broadcasting a token of their own.
Each day the app downloads a public list of tokens that have been shared by people who have tested positive for COVID-19.
If your phone has been around a number of these tokens, it will notify you to get tested and self-isolate.
If you test positive for COVID-19 yourself, your doctor will give you a key to enter into the app. Entering the key will upload your tokens to the public list.
While exposure notification apps do preserve privacy, they are limited in effectiveness without widespread adoption. Additionally they are not a suitable replacement for traditional contact tracing.