Others In Close Proximity
WeTrace uses Bluetooth LE to keep track of people you were close to. It automatically collects the ids of other users while it shares its own id to them.
Tested Covid-19 Positive
When a user is tested positive or shows symptoms he/she can report the status change.
Notification About Potential Contact
A silent notification is broadcasted to all the users, that then can locally compare the newly reported case with their database of collected user ids. If the reported id is found in the database, the user that he/she might be at risk – the app will inform the user.
Privacy-Preserving
No personal and identifiable data will be shared with anyone. No data is stored on a centralized server.
Permissions
For the tracing Bluetooth permission is required and Push Notifications to notify you about changes.
FAQ
When designing the solution, we were focus on data privacy. Our solutions has the following benefits:
- A user gets a random id assigned that he then will broadcast. The random id will be changed every day to increase difficulty to be tracked
- Contact data is only stored on the device locally, it will never be sent to a server
- A backend is only needed to send a positive report to other people, this information will never be stored