My company issued Windows machine has the camera physically disconnected (internally). My macbook (runs Linux), also has the camera removed.
I own a USB web cam, and it works with Linux. I am not sure how to use it with Windows w/o Skype. We are not allowed Skype, so I have no way to use it.
Security is tight where I work.
My phone and iPad have cameras. I suppose they will do.
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What is the most common service used for video interviews (Skype, Viber, etc)