Taiwanese site TechNews claiming that Apple will be including a sapphire-covered capacitive home button on the iPhone 5S in order to accommodate the fingerprint sensor rumored to be coming as a differentiating feature for the device.
Apple is expected to do away with the traditional physical home button, which has long been one of the most unreliable components on iOS devices. It’s thought that using sapphire crystal, which has a hardness second only to diamond, will prevent the button from getting scratched and ruining the fingerprint sensor. […]
They insist Apple will employ a capacitive touch home button for the first time with the iPhone 5S, eliminating one of the most unreliable components in an iOS device (the physical home button has a tendency to fail after long periods of use).
TechNews has not, however, been a regular source of Apple rumors, and thus it is difficult to place much faith in this rumor.