Trust Kensington, the choice of it professionals, to help protect the sensitive information on your MacBook 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 percent. Frequently Asked Questions: Q: How thick are the MP12, MP13 and MP15 privacy screens? A: the MP12, MP13 and MP15 are very thin compared to other MacBook privacy screens, They are. 87mm thick. We measured other brands at 1. 06mm, 1. 2mm, and 1. 55mm. Q: Will My MacBook be able to completely close with the privacy screen attached, just like it does without a privacy screen? A: because our privacy screen attaches to the frame of a MacBook, there could be a slight gap when closed with the privacy screen attached. Q: What are the advantages of a magnetic privacy Screen? A: a magnetic privacy Screen can be taken on and off a laptop easily and quickly. Our MacBook privacy screens come with a storage sleeve for the screen when not in use. Q: Will My MacBook still "sleep" When closed with the privacy screen attached? A: Yes, as long as you have that functionality enabled.