On-topic-ness of questions on legal issues related to academia? seems to say questions pertaining to legal issues are on-topic.
However, the question below got closed on the grounds that it is a legal question.
Has the stance on questions pertaining to legal issues changed?
Is consent required by law to take a picture or to record audio / video of a conference talk in France?
Provided that the conference does not explicitly prohibit unauthorized audio and visual recordings of the presentations, and ignoring ethical/political/any other non-legal issues.
I am aware of the question Is consent required to record audio of a conference talk in the US?, but as the question indicates it focuses on the USA only.