Apple has secured a groundbreaking new patent for the anodized casing of its iPhones and iPads. This patent showcases a sophisticated design that incorporates a metal substrate, a porous anodized layer, and a hydrothermal sealant coating. The primary objective of this innovation is to tackle the persistent problem of fingerprints and stains that easily mar device surfaces. The revamped design not only bolsters the anti-fingerprint capabilities and simplifies cleaning but also ensures the long-lasting durability of the casing. Additionally, the patent provides versatility by offering two material options: aluminum alloy and titanium alloy, tailored to meet the diverse needs of users.