With the Galaxy S5, Samsung decided to set itself apart not that much in terms of specs, but rather with extra features, like a Finger Scanner in the home key. The S5 sports a taller, wider body than the S4, and it's that same fingerprint sensor that might be the reason, requiring a thicker bottom bezel. The above mentioned swipe Finger Scanner is embedded in the home key, providing biometric authentication for unlocking the phone, or for secure mobile payments transactions.
We took it for a spin, and found it to work pretty well for the simple purpose of unlocking the phone, once we did the initial swiping and recognition. As for the rest of its potential features, like mobile payments authentication and the like, we'll test more at a later date, when all the necessary accounts are live and functional. Check out our first Finger Scanner impressions in the video below.