Touchless Touch-Screens Could Be On The Horizon

THE popularity of touch-screens on mobile phones means that a swipe, tap or lcds a flick comes as naturally these days as the click of a mouse. But existing touch-screens have iphone refurbish lcds their limits. Those relying on changes in electrical resistance tend to have poorer resolution than is needed for modern applications, while those that rely on capacitance href=""> require an ungloved finger.

Consequently, a new generation of touch-screens, known as optical liquid crystal displays, is emerging.

Read the whole story at The Economist