Hey @helloparent
My apologies for the delay in getting back to you. In the future, if you have a time-sensitive issue I recommend reaching out via the Developer Support Center.
To start, you can use the List Meeting Participants Dashboard API to obtain the device that a participant joined the meeting with. For past meetings, make sure to set the type parameter to past:
If you’re looking to use the Web Portal, you can navigate to the Dashboard Meetings page to see the device that a participant joined with.
Let me know if that helps.
Thanks,
Max