It’s not only teaching that’s happening remotely for millions of students — it’s testing, too. And many colleges are using software to watch students take those tests. Big providers include Respondus, ProctorU and Proctorio. Some of them use webcams to track how often students move their heads or eyes or touch the keyboard. Anything out of the ordinary is flagged for teachers to review. Amy Scott speaks with Todd Feathers, who recently co-wrote a piece about a “rebellion” against this kind of surveillance for Motherboard. One concern: false positives.