Oh, there wasn't anything secret presented at the conference as far as I'm aware.

It was a European conference and, for instance, I hadn't previously known about the Prüm Arrangements [1], or perhaps I had and forgotten about them. In any event I was not aware of the ability to freely share such highly private information about individuals across borders, and quite shocked to learn about it.

Mind you, the majority of the attendants of the conference were absolutely uncritical about such regulations being in place. In fact, they were mostly in favor of them it seemed, which is not surprising given that that's what their research is based on.

[1] https://www.london.gov.uk/what-we-do/mayors-office-policing-...