Exposure Notifications is no longer available as of September 18, 2023. The Exposure Notifications project will be moving into archive status.

This is a reference design for an Android app implementing the Exposure Notifications API provided by Apple and Google.

Only approved government public health authorities can access the APIs (included in an upcoming build of Google Play services) to build an app for COVID-19 response efforts. As part of our continued efforts to be transparent, we’re making this code public to help approved government public health authorities understand how to use the Exposure Notifications API to build their COVID-19 apps.

Read the Exposure Notifications API Terms of Service

This project uses the Gradle build system. To build this code, use the gradlew build command or use Import Project in Android Studio.

• Overview of COVID-19 Exposure Notifications
• Frequently Asked Questions
• Exposure Notification Bluetooth Specification
• Exposure Notification Cryptography Specification
• Android Exposure Notifications API
• Exposure Key Export and File Format