The Home button has got to be one of the defining features of the iPhone's clean rounded rectangular design. Whereas some other manufacturers add a bunch of physical buttons to their gadgets, Apple instead has moved all controls to the iOS software, leaving only the Home button on the iPhone's face.
That could change with the iPhone 5S, the next iPhone refresh expected later this year. If a new rumor is to be believed, Apple will for the first time replace the iPhone's Home button - prone to failure after long periods of use - with its capacitive counterpart.
This isn't new: many Android handsets have touch-enabled "buttons" like Samsung's Galaxy S series, for example. Apple's innovation, the story goes, involves using sapphire crystal to prevent scratches and dings and protect the integrated fingerprint sensor...