It is open to the public and there is actually a PING conference call scheduled for tomorrow (link to agenda below).
From the PING Charter:
"Participation
Participation in PING is open to the public. Participants who do not represent a W3C Member should join as Invited Experts. Invited Experts in this group are not granted access to Member-only information.
Anyone may subscribe to the group's public mailing list and engage in discussion. Those who intend to contribute to deliverables will be asked to join the group.
Communication
This group conducts its work on the public mailing list public-privacy and in periodic teleconferences, typically 1-2 times per month. Additionally, the group meets face to face at TPAC. PING is experimenting with using a free Slack workspace - interesting discussions from Slack will be called out to the mailing list, and decisions will not be finalized based solely on Slack discussions.
Information about the group (deliverables, participants, face-to-face meetings, teleconferences, etc.) is available from the PING home page.
Decision Policy
As explained in the Process Document (section 3.3), this group will seek to make decisions by consensus. When the Chairs put a question and observe dissent, after due consideration of different opinions, the Chairs should record a decision (possibly after a formal vote) and any objections, and move on."
It is open to the public and there is actually a PING conference call scheduled for tomorrow (link to agenda below).
From the PING Charter:
"Participation
Participation in PING is open to the public. Participants who do not represent a W3C Member should join as Invited Experts. Invited Experts in this group are not granted access to Member-only information.
Anyone may subscribe to the group's public mailing list and engage in discussion. Those who intend to contribute to deliverables will be asked to join the group.
Communication
This group conducts its work on the public mailing list public-privacy and in periodic teleconferences, typically 1-2 times per month. Additionally, the group meets face to face at TPAC. PING is experimenting with using a free Slack workspace - interesting discussions from Slack will be called out to the mailing list, and decisions will not be finalized based solely on Slack discussions.
Information about the group (deliverables, participants, face-to-face meetings, teleconferences, etc.) is available from the PING home page.
Decision Policy
As explained in the Process Document (section 3.3), this group will seek to make decisions by consensus. When the Chairs put a question and observe dissent, after due consideration of different opinions, the Chairs should record a decision (possibly after a formal vote) and any objections, and move on."
PING mailing list archive:
https://lists.w3.org/Archives/Public/public-privacy/
Agenda for next meeting 21 Jan 2021:
https://lists.w3.org/Archives/Public/public-privacy/2021JanM...
W3C's "Privacy Threat Model"
https://w3cping.github.io/privacy-threat-model/
W3C's "Fingerpringinting Guidance":
https://www.w3.org/TR/fingerprinting-guidance/
https://github.com/michaelkleber/pigin
https://github.com/michaelkleber/turtledove