It seems like it has been ages since we started hearing that the next iteration of the Apple iPhone would feature a fingerprint scanner that would be connected to the phone's home button; now, KGI analyst Ming-Chi Kuo, considered to be well-connected to Apple, confirms that by using a convex button instead of the usual concave shape, Apple will make room for such a feature in the next iteration of the device...
Source: http://www.phonearena.com/news/Analyst-Fingerprint-scanner-coming-to-the-sapphire-home-button-of-the-Apple-iPhone-5S_id46274
Source: http://www.phonearena.com/news/Analyst-Fingerprint-scanner-coming-to-the-sapphire-home-button-of-the-Apple-iPhone-5S_id46274