I’ve gathered more information on this topic regarding iPads, Androids, and older PCs.

A few notes from the video:

• The Zoom app on Android devices doesn’t have the Virtual Background function.
  You will need to use good old colored paper to indicate the colors.  Be sure to keep holding up each color until time to switch colors.  I have not yet tested this functionality in WebEx.
• Some older or lower end models of PCs can’t handle the Virtual Background feature in Zoom.  I have not yet explored the details in WebEx.

Steps to add color cards as background images on the iPad:

1. Visit http://bit.ly/timerbackgrounds
2. Click each file one-by-one and download it to the iPad (don’t use the Download All)
3. Open Downloads
4. Tap the first file to open it, then tap it again to make it full screen.
5. Take a screenshot (press the power button and the home button at the same time). This adds it to the photos which is where Zoom looks for background images.
6. Repeat steps 4 & 5 for each photo
7. Open Zoom.  Tap on the ellipsis (…) in the top right, then tap on Virtual Backgrounds
8. Click the + icon at the bottom of the screen, then select the first image (white) to add it to the backgrounds.
9. Repeat this for green, yellow and red in order.
10. Leave this open while timing and choose NONE for your background between speeches, then choose WHITE when the speaker starts and GREEN, YELLOW, and RED at the appropriate times.

Please add comments with your own ideas or experiences with this process to make it better.  See more of my Toastmasters tips at https://davidhablewitz.com/category/toastmasters/

(See also Part 1: Using Backgrounds for Timer Role in Toastmasters Zoom Online Meetings