I made this video once I figured out how to create my own document camera using a cell phone or tablet with my computer. With the free program Discord, we can create an account for each device, then have them connect to each other and share screens. Then we just need to share our screens live with Meet or Zoom, or we could make recordings of our screens with Screencastify or similar. It works great, with PCs, Macs, Android and iOS devices.