The audio watermark, or audio signature, is an inaudible watermark of a user's personal information embedded in the audio that is played through the receiving user's speakers by the client receiving audio from Zoom meeting servers. This means that if someone records the meeting, with either a separate microphone or 3rd-party, and shares the audio file without permission, Zoom can assist with determining which participant was responsible.
Local and cloud recordings made directly through Zoom do not contain the audio watermark, as there are other methods to determine who recorded or shared the meeting audio.
This article covers:
To enable or disable audio watermark for all users in the account:
Note: This will require the meeting options Only signed-in users can join the meeting or Only signed-in users with specified domains can join meetings to also be locked on.
If you need to know who recorded an audio file, submit a request to Zoom Support. In your request, include the Meeting ID, date and time of occurrence, and the recording file (video or audio file).
Note: The file must have audio of at least 2 minutes in length.