Table of Contents

 1 Scope          
 2 References
 3     Definitions
        3.1     Terms defined elsewhere       
        3.2     Terms defined in this Supplement      
 4 Abbreviations and acronyms             
 5 Conventions            
 6 Overview of contact tracing               
        6.1     General          
        6.2     Entities, methods and protocols for a digital contact tracing system     
 7 Contact tracing models       
        7.1     Centralized contact tracing model       
        7.2 Decentralized contact tracing model  
Appendix Ⅰ – Practical use cases for contact tracing systems    
Ⅰ.1              Decentralized privacy-preserving proximity tracing [b-DP^3T]     
Ⅰ.2              Centralized privacy-preserving proximity tracing [b-Martin], [b-PEPP-PT]
Bibliography