When I TA'd a CS class (the students did their exams in-person but on a website with their laptops), we would solemnly tell them at the start of the exam that we would be monitoring all cell traffic in that room haha.
Somehow my EMP blast idea is the less intrusive one...
I was forced to get a cloud certification while working for a former employer. I took it remotely and had to leave the camera on the whole time. If you looked away even for a second, you'd get a warning. Very dystopian.