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Your theory sounds reasonable but in the case of webex it's using ultrasound put out from the displays to figure out which room you're in.

https://help.webex.com/en-us/WBX89838/What-is-Cisco-Intellig...




Like this kind of feature should really be “only when I click the scan button” but I have to say it’s pretty neat in practice.

Short distance data channels that solve the “two computers physically next to each other can’t communicate frustration” are always welcome in my book.


See, you will enable it. it is plausible why you should give over microphone access.

(meanwhile I can also add an advertising sdk to listen for nearby television advertisements or recognize nearby music to "add value")




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