DP^3T is an international initiative with participation from ETHZ and EPFL. We're combining forces for reaching our common goal: Contact tracing without giving up privacy.
To stop a viral outbreak, you must break the chain of transmission. You can do this by isolating contagious people.
Only, there is a problem with COVID-19. Infected people can be contagious, before having symptoms, which means: You can spread the virus without knowing.
If only people with symptoms isolate themselves, the virus can still spread. We are one step behind.
If only people with symptoms isolate themselves, the virus can still spread. We are one step behind.
Therefore, exposed contacts should be informed. Then, they can also precociously isolate early – before they feel sick.
Not everyone exposed contact will have the Virus. But those who do won’t pass it on. The trick is to be one step ahead.
The trick is to be one step ahead.
Via P2P (peer2peer) Bluetooth the app recognizes ecounters with other users. Such encouters will be registered by the app if two users stand next to each other for a certain time period.
Encounters with other users are only saved locally on your smartphone. Each App has its own dynamic ID that is randomly generated via «HMAC(SHA256)» and changes every 60 seconds. This way each user remains anonymous. Important features:
If you test positive, you can inform everyone you’ve encountered with through the app. Everything happens anonymously, no one can see who sent the message.
The App informs all encounters about the infection. The message is anonymous. There is now a risk for the users you’ve encountered with to also be infected. The app provides you with information on how to proceed
Encounters informed via the app can take action e.g. Self-isolation.
This is the only way to be one step ahead.
You can find the app and the source code from the DP-3T project on Github
www.github.com/DP-3T/
