Just as a hen is about to lay an egg, she applies a liquid coating around it that naturally protects against contamination.

FORBES: Natural Protection

But when it is stretched, the liquid coating the film recedes into the expanded pores, exposing their edges and reducing lubrication, causing it to become rougher.

BBC: New material can halt runny liquids on demand

The liquid-repellent coating developed by P2i can be found on the Alcatel One Touch 997, whereas HzO just announced a partnership with Atelier Haute Communication to apply its waterproofing technology to a forthcoming limited edition TAG Heuer Android phone.

CNN: Waterproof phones and tablets make a splash