IPHONEApple brings out a new top-of-the-line iPhone model every year, but a redesign only every other year. In the intervening cycles, the company tends to keep the phone's exterior the same, but change the innards and the software. This is one of those in-between years, but the new iPhone 5S has a potentially game-changing hardware feature and a radically new operating system.
It sounds like a gimmick, but it's a real advance, the biggest step ever in biometric authentication for everyday devices. After using Touch ID, I found it annoying to go back to typing in passcodes on my older iPhone.The iPhone 5S is the first digital device I've seen with a simple, reliable fingerprint reader
one you can confidently use, without a thought, to unlock the device instead of typing in a passcode. You can even use this fingerprint reader, called Touch ID, to authorize purchases from Apple's App, iTunes and e-book stores.




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