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 you all the glory of a touchscreen device for just $99.

The gadget supposedly emits an invisible light field that allows standard screens to receive input from hand gestures. It plugs into the laptop via USB to transmit those…

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