Troll Touch today announced the immediate availability of the TouchStar SlipCover 17 (US$595), a custom designed, externally mounted touchscreen system for Apple’s 17-inch PowerBook. “Featuring all metal construction with powder-coat finish, a non-breakable analog resistive touchscreen overlay and Troll’s proprietary high-resolution touchscreen controller, the SlipCover 17 complements the look of the laptop it enhances. Installation is easy. Simply slide the SlipCover down over the laptop’s display and plug it into one of the computer’s available USB ports. Touchscreen calibration is easy using the provided software. The touchscreen’s analog resistive technology allows the user to activate the screen via fingertip, gloved hand or stylus.”