Plenty of laptops now come with built-in touchscreens, giving users another option in navigation and control. If you want to enjoy the same functionality, but aren’t quite ready to upgrade your computer just yet, you might want to check out the NeoNode AirBar.

A device that turns ordinary laptop screens into functional touchscreen displays, it lets you take advantage of the touchscreen support in modern desktop operating systems without having to purchase an entirely new machine. Even better, it does that at a plug-and-play capacity, so you just slip ot into a USB port and you’re good to go.
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https://www.coolthings.com/neonode-airbar-laptop-touchscreen/