Troll Touch -- a firm specializing in custom touchscreens for Apple products for over 20 years -- have now added two new product options for the Apple 27-inch Cinema Display, both incorporating an analog-resistive overlap and high-resolution USB controller. Buyers can choose either an internally integrated touchscreen that replaces the sheet glass, or a user-installed removable "SlipCover" style that can be installed or removed in minutes. Both are Mac and Windows compatible.