Engadget: AirBar gives your MacBook Air a touchscreen...
AirBar gives your MacBook Air a touchscreen for $99*
The USB accessory sits below the display and is held in place with magnets.
Sure, the new MacBook Pro has that fancy Touch Bar, but some Apple laptop owners long for a machine with a full touchscreen display. A company called AirBar already gave the PC faithful a USB accessory that gives a 15.6-inch screen a more tactile function, and at CES it's doing the same for the 13.3-inch MacBook Air. The company calls the device "plug-and-touch," which means you don't have to worry about futzing with drivers before you can use the gadget.
Rest of article below... *Engadget USA