Your fingers are often covered in sunscreen, sweat, or bug spray. A good screen protector will have an oleophobic coating that repels oils, making it easy to wipe clean and preventing the "rainbow effect" of smudges.
Peel the backing off the protector slightly. Align it over the CT8 screen. Once aligned, use a piece of tape to hold one edge down (like a hinge). Lift the other side, remove the backing, and let the protector drop naturally. powakaddy ct8 screen protector