@misc{RACCX20, author = { Ronald L. Rivest and Hal Abelson and Jon Callas and Ran Canetti and Kevin Esvelt and Daniel Kahn Gilmor and Louise Ivers and Yael Tauman Kalai and Anna Lysyanskaya and Adam Norige and Bobby Peletier and Ramesh Raskar and Adi Shamir and Emily Shen and Israel Soibelman and Michael Specter and Vanessa Teague and Ari Tractenberg and Mayank Varia and Marc Viera and Daniel Weitzner and John Wilkinson and Marc Zissman }, title = { The {PACT} protocol specification }, date = { 2020-04-08 }, OPTyear = { 2020 }, OPTmonth = { April 8, }, note = {{PACT} Technical Report No. 1}, url = { https://pact.mit.edu/wp-content/uploads/2020/11/The-PACT-protocol-specification-2020.pdf }, abstract = { We describe here the PACT (Private Automated Contact Tracing) protocol, a simple, decentralized approach to using smartphones for contact tracing based on Bluetooth proximity. Users of this scheme do not reveal anything about themselves, unless they volunteer to do so. In particular, users can volunteer to donate their private data to a (trusted) health authority, who can then use this data to further control the spread of the virus, but this is discretionary to the users. }, }