How to respond when someone wants you to turn on your webcam?

As someone who values their privacy I rarely use my computer's webcam and prefer that it remain covered and disabled. If I'm on a work call and anyone asks me if I can turn it on I usually make an excuse that my internet is too slow or my web browser doesn't have access to the camera.

However every now and then I'll encounter someone who is very insistent and asks that I get the web cam working before our …

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