On the topic of fraud prevention, the interviewer could simply ask the interviewee to be on camera for literally 5 seconds, then feel free to turn off video.
Again, this is based on an Upwork profile that already had a picture, so if discrimination was going to happen, it would be before the video interview stage anyway. This is just about a verification step, and in a platform like Upwork, refusing to be on camera for LITERALLY 5 seconds probably SHOULD be considered a big red flag.
The A/B studies are also used to prove discrimination that people usually won't admit to, not only to reveal unconscious bias.
How you interact with someone is just as important, if not more important, than if they can choose the correct algorithm.
It's also true that Upwork has many, many people who will present themselves as a single individual. Instead, they are actually an agency and you will get a rotating cast of developers. This becomes apparent the fifth time you explain the same thing to your contractor, who is actually not the person you explained it to the fourth time, or the third time, or on and on and on.
Video verification helps you ensure that you are getting what you paid for, and that your time explaining the brief and iterating on their work isn't wasted.
I've noticed in the age of remote work some people seem suprised when they first see me. I am now wondering if I am benefiting from the opposite problem of people correlating me with Asian stereotypes?