Changed claim: quote(P203): Societal requirements|:1. Epidemiological sense & purpose|2. Voluntariness & freedom from discrimination|3. Fundamental privacy|4. Transparency and verifiability|Technical requirements |5. No central entity to trust|6. Data economy|7. Anonymity|8. No creation of central movement or contact profiles|9. Unlinkability|10. Unobservability of communication