I think zoom proctoring in combination with some increases in communication overhead are quite practical. We recently did this. Giving students different exams

I think zoom proctoring in combination with some increases in communication overhead are quite practical. We recently did this. Giving students different exams (selections of slightly and subtly different tasks from a task pool), not showing task names, and mixing up the order of tasks for each student seems to work quite nicely. The increased overhead to communicate which exact answer they need, finding out which other student has the exact same task, etc., has worked really well for us. Of course, you have to have it in a way where they do not have much time left over to shoulder this overhead. Edit: So students are going from "What's the answer for 5" to sharing the topic of the task, the task description (there may be a negation hidden in there), and the constants and other students needing to compare. Maybe they aren't even at this task-type in their exam yet, as the order is mixed. Edit2: We weren't really watching the video stream. It was just to discourage students actually sitting side-by-side, which would decrease the communication overhead drastically.