According to ivyskin” Retro Reflect Chrome Touch-Thru© (T2) case by ivyskin is the first of its kind to provide a hard screen shell over the iPod touch. This German designed material is second to none on the market today! Enables you to navigate the iPod touch’s screen with the hard scratch resistant shield. ivyskin has designed and manufactured the all new T2 case© from scratch by using the latest technology available in crystal case manufacturing. Another breakthrough from a company that always thinks outside the box. Surface Xylo Wave (SXW)© technology passes ultrasonic waves that pass over the touch screen panel and transfer them to the itouch’s screen without any interferences. When the panel is touched, a portion of the wave is absorbed. This change in the ultrasonic waves registers the position of the touch event and sends this information to the iPod touch’s screen for processing.