Privacy-friendly contact tracing

Across the world, governments and health authorities are working together to find solutions to the COVID‑19 pandemic.
In recent weeks, some concerns about certain tracking technologies have been raised by those who fear the curtailment of individual freedoms and their privacy.
At CrypTool, we try to explain as well as possible what is hidden in these decentralized tracing protocols so that you can form your own opinion on the subject.

Try the animation below CTO Corona Protocol Demo

Step 1

Alice’s phone broadcasts a random message every few minutes

In order to maintain user privacy, the message is sent over Bluetooth and does not contain location data for proximity detection.

This message is called a Rolling Proximity Identifier or EphID. For now, let's call them Broadcast-IDs. These identifiers are unique and change often.

Try it yourself!

We have made a small animation, so that you can visualize each step of the protocol.

Animation

Persons

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