A device for old cars that tried to prevent jaywalking deaths by gently catching jaywalkers. How the CIA tracks the location of your phone. I loathe the phrase “thought leader”; here’s a book critiquing the entire trend and concept. A fun way to thwart face detection: Download and print up one of these masks based on the faces of 130 executives of major biometrics firms. An augmented-reality measuring tape. A new algorithm that will figure out how to fold any shape in origami. “I before E, except after C” is proven, by the data, to be wrong.