COVIDaware MN uses Bluetooth Low Energy (BLE) technology to notify you if you have been exposed to COVID-19, so you can reduce the risk of infection for your friends, family, and neighbors, and help Minnesota slow the spread.
Step 2. Your phone remembers other devices it meets, but won’t identify you to anyone.
Once you opt-in to the notification system, COVIDaware MN will generate an anonymous key for your phone—the key is a random number. To help ensure that these random keys can’t be used to identify you or your location, they change every 10-20 minutes.
Step 3. Your privacy is protected. No information that will identify you will ever leave your phone.
Your phone and the phones around you work anonymously in the background, using Bluetooth Low Energy (BLE) technology to exchange these privacy-protected keys. This is a passive process that begins once you opt-in. COVIDaware MN functions in the background, and it won’t drain your battery.
Step 4. The system checks for positive COVID-19 cases every day.
On a daily basis, your phone downloads a list of all the anonymous keys associated with positive COVID-19 cases and checks them against the list of random keys your phone has encountered in the last 14 days.