It’s been a good year for touch screens. The launch of the first iPhone model a year ago boosted interest in the technology tremendously, and the updated model available Friday likely will stoke enthusiasm further. Now touch-screen manufacturers are going flat out, and more devices will soon be controlled by the tip of your finger. “After the iPhone came out, a lot of mobile-phone companies said ‘Oh, I can make that kind of touch-screen mobile phone, too,'” said Jennifer Colegrove, analyst at iSuppli.
