Apple's next iPhone may come with a new feature: a fingerprint sensor.
(Read more: Why Google's $35 Chromecast isn't an Apple killer ... yet)
On Monday, the iPhone and iPad maker released a new beta version of its software, iOS 7, to developers. According to 9to5Mac, there is a folder in the beta version of the software called a "Biometric Kit" with a string of code that says "A fingerprint that changes colour during the setup process."
(Read more: Apple to probe alleged violations in China supplier plants)
The "Biometric Kit" folder has led many to speculate that the new smartphone, dubbed the iPhone 5S, will have a fingerprint sensor that is used as part of the home button.