Looks like the rumors are true: iOS 7 beta 4 has leaked a new folder called “BiometricKitUI.” Based on the description, sent to us by Hamza Sood, it seems pretty clear that Apple is preparing a new iPhone with a fingerprint sensor. The interface is described above, pointing to a user being able to swipe the sensor on the iPhone’s home button. Sood tells us that the above strings are what an iPhone with VoiceOver on would read to a user. According to a source familiar with the development of the new iPhone, the user-interface for the fingerprint scanning system has been complete. This person also says that the technology is focused around unlocking the phone, so it is unclear if it is built for a payment system (as rumored) in the next iPhone. We previously reported that Apple’s iWatch will include some biometric related hardware/software features.