Privacy Full Cover Real Glass with Easy-On Mounting Frame Privacy Filter. Thanks to the special privacy filter integrated into the protective glass, the display light is only allowed through from a specific viewing angle. The built-in privacy filter ensures that the display light is emitted only when viewed directly from the front. At a side viewing angle of 30 degrees or more, the privacy filter protection refracts the light, making the display appear black. This provides effective protection against side glances from, for example, fellow passengers on a train, plane, or bus. Note: Due to the privacy filter, the fingerprint function may not be supported. Full Cover or 3D/Curved protective glass. Compared to so-called 2D protective glasses, the Displex Full Cover tempered glasses (3D/Curved) cover not only the active area but the entire display area. Especially for curved displays, we recommend a Full Cover protective glass (3D/Curved) as it is tailored to the rounded edges.