Yes, or their phone. I mean, they could monitor your eyes with the webcam, and if you start rummaging on a different keyboard/mouse and looking away, this might

Yes, or their phone. I mean, they could monitor your eyes with the webcam, and if you start rummaging on a different keyboard/mouse and looking away, this might be detected. But a phone? Easy to hide! What do you do if they want to go to the restroom? Additionally, it puts another "barrier of entry" in there: Rich kids can buy more electronics to cheat better. Or pay somebody to do the manipulation for them.