Why not an 'have I been pwned' for Covid-19 ?

COVID 19 is no more stoppable but slowing it's diffusion is a priority and would make the difference.

Why not create a 'haveibeenpwned.com' like website service to help slow down COVID 19 diffusion.

Many of our mobile phone keep tracks of our daily movements. (give a check to your https://www.google.com/maps/timeline )

Medical authority can have write access to the service and upload anonimous location data of last days of people confirmed affected.

Any people can install an app that on daily basis compare location and timeframes with the ones confirmed and uploaded by authorities.

The app allert with a warning people that match location and timeframe of infected people giving details about the match.

People can than contact local authorities that can give more information or invite to voluntary quarantine.

This would not be a perfect. Many people don't have traking data. Many people would not use the service. But every infection that prevented would slow down diffusion and save lifes.