Protect sensitive information and reduce the chances of wandering eyes viewing confidential data. Limit the field of vision to +/- 30 degrees so a person off to the side only sees a dark screen. Compatible with the touch screen. Anti-reflective coating to reduce glare and filters out harmful blue light by up to 30 percent. Reversible with matte and glossy viewing options. Includes a cleaning cloth. Attached easily with double-sided tape (included).