Beni suggests surveillance tech becomes easier to accept when its purpose, personality and boundaries are obvious. I’ve been writing a lot lately about cameras moving onto our bodies. Meta puts them in glasses. Apple is about to stick ’em in AirPods. And a big part of the resistance comes from the obvious question: Am I being recorded right now? Then I saw Beni. (You have to watch this video.) Beni looks like WALL-E’s smaller, sportier cousin. It’s a US $549 four-wheeled camera robot that...