AirBar Sensor

                    Touch-screen capabilities are widely appealing, but they still don’t come included with most laptop computers available today.A company called Neonode has come upwith AirBar, a gadget that will bring touch-screen functionality to any PC. Without any heavy duty hardware  adjustmentsor a single software update, AirBar could theoretically  turn any computer screen in to a fully responsive touch screen.
                  AirBar covers your dumb display with a blanket of invisible light that allows you to interact with the screen through touch. The discreet bezel bar sits below your PC display, and is readyto use as soon as you plug it into the USB port. AirBar recognizes the gestures you’re used toon other devices, like pinch, swipe, zoom, and scroll functions. And because the “touch” interactionsare triggered by anything that crosses AirBar’s light field, you don’t have to use your fingers. You’llbe able to use AirBar with the most slippery gloves or even heavy work gloves, paint brushes, pencils,or anything you have nearby  no stylus required.