You need a MacBook with a butterfly keyboard to use macOS Catalina’s Sidecar

Photo by Chris Welch / The Verge Apple released macOS Catalina today, and one of the update’s marquee features is Sidecar, which lets you use your iPad as a second display for your Mac laptop or desktop. The feature is designed to be a handy way to give yourself some extra screen real estate, especially if you regularly carry around both an iPad and an Apple laptop. The Verge’s Dieter Bohn called it his favorite new feature on Catalina in our review.But there’s a catch if you&