I get a little fidgety when anyone gets their fingers close to my laptop’s screen. But that’s maybe because I’m lazy or old school; I just don’t like the idea of having to wipe my screen down. The reality however is that more and more laptops do come with a touch sensitive screen, and newer operating systems like Windows 10 are built to take advantage of this. If your laptop isn’t enabled, you don’t have to get a new one. NeoNode’s AirBar is a thin stick that sits beneath your screen and attaches magnetically. It projects an invisible light on your screen, which allows it to track your tactile inputs. It simply plugs into a USB port and doesn’t require any installation. However it’ll work better with Windows and ChromeOS, with limited functionality on OS X. And it only works on 15.6 inch screens. Still, at $49, it’s an inexpensive way to add some functionality to your potentially aging laptop. It’s available next month.