Trust Kensington, the choice of IT professionals, to help protect the sensitive information on your MacBook 12-inch and reduce the chances of wandering eyes viewing confidential data on your screen. MP Series Laptop Privacy Screens limit the field of vision to +/- 30 degrees so a person off to the side only sees a dark screen. They are easy to attach or remove with the innovative magnetic strip. The reversible privacy screens also use a low reflective coating to reduce glare, and they filter out harmful blue light by up to 22%.