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Apple's new iPhone may have fingerprint sensor

Adam Jeffery | CNBC

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."

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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.

Such a feature could be used to replace Apple's current lock-screen system, which requires a four-digit PIN number.

(Read more: Samsung trumps Apple sparking calls for low-cost iPhone)

Of course this isn't the first time that it has been rumored Apple would build a fingerprint sensor into its hardware. Last July, the tech giant acquired AuthenTec, a company that makes biometric security hardware, for more than $350 million.

Analysts expect the Cupertino, Calif., company to reveal the next generation iPhone this September or October, however, the company has not confirmed an exact date.

Besides a fingerprint sensor, the new phone is also rumored to feature an enhanced camera, an A7 processor and an improved Siri system.

By CNBC's Cadie Thompson. Follow her on Twitter @CadieThompson.

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