To keep it short: You can unlock the 5s holding it in one hand from any orientation, but you need to use both hands and swipe down the center every time on the S5.
Touch ID: So easy, a cat could use it.
Yep, you just can't compare the two can you? "Swipe over the center" and "Swipe over the entire pad"? Touch ID is in a different league!
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Give Samsung a break, they only had a few months to copy apple this time.
Love it!