[olliej]

In this case it's a convenience feature, rather than a avoid user controlled channels thing.

As I noted earlier it works without bluetooth available, but more importantly I suspect, if it were bluetooth everyone would have to peer their devices with every conference room. If it were wifi you'd need to know the network name of the conference room's AV system.

While both options would work, having a single "switch to AV system" button is clearly the best user experience, so you try to make that possible. Given both the app and the AV system have the ability to create and record sound, that's the obvious choice.

But again, I'm not making any statement on the security of the actual implementation from Zoom :D