We accidentally discovered another feature of the emergent SenseStack: if we do the call on now.edgeryders.eu, people access through their Edgeryders account. Then, it becomes easy to put through the consent funnel only the people who have not yet posted on the platform, and who have therefore not been through the funnel yet. Those who have posted before can simply be taken to the call’s room. Elegant! This is evolving more and more into a @hugi
But of course then we would need a recording function to work in now.
Other advantage: in data protection and data safety terms, the audio file would now live on our server, stewarded in the same conditions as the database of the main Discourse platform.
This is a good point. So far, I have taken the opposite path, and tended to start “on the dot” to signal respect for people’s time constraints etc. What do people think about it? @matthias? @MariaEuler? @nadia?
An important word is missing from the above. I would reformulate: a contact tracing app is not the answer to fighting the pandemic currently, etc. (see here).
How interesting! I had no idea.
I would add “use headsets, or at least headphones. And be in a quiet room” 
I like this idea a lot, though I expect low response rate.