The TCN Coalition is a global team of technologists and experts supporting exposure notification applications during the COVID-19 pandemic. They support and advocate for privacy-preserving technologies, realizing that exposure notification apps must be interoperable, trusted by the public, and privacy-preserving in order to succeed. Crimson Vista's Ellie Daw has been involved in the coalition nearly since the beginning, leading a working group for interoperable design, providing feedback to policy makers, and publishing thought-leadership in the space.
The TCN Coalition website has more detailed information about the volunteer leads, the member organizations, and the current efforts.
For more background on what these technologies do, check out our blog post on the topic.