The 4-way Privacy Filter for ThinkPad 8 utilizes the patented 3M microlouver privacy technology to dim the screen and block the vision of wandering eyes from four directions: above and below the tablet, and from both sides. It also guards your screen from scratches and smears. Privacy in landscape and portrait Maintains high clarity Residue-free removal Maintains Touchscreen functionality Easy to apply and removeThe 4-way Privacy Filter for ThinkPad 8 utilizes the patented 3M microlouver privacy technology to dim the screen and block the vision of wandering eyes from four directions: above and below the tablet, and from both sides. It also guards your screen from scratches and smears. Privacy in landscape and portrait Maintains high clarity Residue-free removal Maintains Touchscreen functionality Easy to apply and remove