Why oleophobic coating on tempered glass matters for fingerprint smudges

Have you ever noticed how some screen guards get covered in greasy fingerprints and smudges within minutes of use? This happens when a screen protector lacks an oleophobic coating.

An anti fingerprint screen guard features a microscopic layer of fluoropolymer material that repels oil and sweat. This makes it incredibly easy to wipe away smudges with a single swipe of a cloth.