"Use the COVID-19 Exposure Notifications System on your Android phone
To help understand whether you've been exposed to someone who reports having COVID-19, you can turn on Exposure Notifications. If you change your mind, you can turn it off.
To use the system, you need to download an official app from your region’s government public health authority.
If you have COVID-19, you may share that info with your app to help alert the people you've been in contact with.
If you've been exposed to someone who has shared they have COVID-19, your app will notify you and give you further instructions."
When I click learn more, I get this.
"Use the COVID-19 Exposure Notifications System on your Android phone To help understand whether you've been exposed to someone who reports having COVID-19, you can turn on Exposure Notifications. If you change your mind, you can turn it off.
To use the system, you need to download an official app from your region’s government public health authority.
If you have COVID-19, you may share that info with your app to help alert the people you've been in contact with. If you've been exposed to someone who has shared they have COVID-19, your app will notify you and give you further instructions."