I wanted to buy a new webcam; basically because I'm finding half my life is spent using one.

Ran into the problems mentioned in the article, and put a Logitech camera onto pre-order.

Cancelled that order last night though: possible to use an android phone as a webcam that's most likely better quality than the current generator of USB webcam. I chose this app [1], others are available.

[1] https://play.google.com/store/apps/details?id=com.pas.webcam...

How do you use the IP webcam address in programs like teams, zoom, skype?

I resorted to buying a magewell hdmi-2-usb converter. Better quality, I can focus and zoom from further away (no huge nose) and depending on your gear you have automatic background blurring (aperture+sensor size)

http://www.magewell.com/products/usb-capture-hdmi-gen-2

It's possible to create a virtual V4L device (https://github.com/umlaeute/v4l2loopback). The app I chose, provides a script to set this up.

There's also a windows driver, but I haven't used that yet