This $99 gadget gives your MacBook a touchscreen

Apple’s steadfast refusal to outfit its MacBook line with a touchscreen option is a well-known industry holdout. We’d much sooner get a massive, 15-inch iPad Pro than the company go back on its years of anti-Microsoft marketing, and the awkward half measure of the new MacBook Pro Touch Bar.So for those eager to swipe their fingers on the display of an Apple notebook, there is one option. AirBar, a magnetic sensor that sits below the bottom edge of a laptop’s display, will grant