If you have the Notion Desktop App installed, you may have started to notice a "In a meeting? Start AI Meeting Notes" notification pop up exactly when you are joining a virtual meeting (e.g. joining a Google Meet on Firefox).
At first, I assumed it must have been using my Google Workspace account to snoop on my calendar. But then I started to notice it would notify exactly when I joined even if I was late and the meeting had previously started.
This was the response from Notion Support after they worked with the Notion Engineering team.
> Meeting Detection Architecture:
> - The system uses a sophisticated dual-detection approach: microphone monitoring combined with network port analysis
> - Detection is implemented separately for macOS and Windows at the native operating system level
I've uninstalled the Notion Desktop App...
1. Notion records audio only during your use of the Meeting Notes feature. Here are the docs: https://www.notion.com/help/ai-meeting-notes
2. Notion desktop app has notifications about meetings that ask you if you want to use Meeting Notes, it recognizes this by detecting that your microphone is on (i.e. it does not listen to audio coming from your microphone). This feature is a setting in preferences btw, under Notifications > Desktop meeting detection notification.
source: I work for Notion