Trust Kensington, the choice of IT professionals, to help protect the sensitive information on your MacBook Pro 13-inch and 15-inch to 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 accessorize this to your MacBook with the innovative magnetic strip. The reversible privacy screens also use low reflective coating to reduce glare, and they filter out harmful blue light by up to 22%.