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In iOS 7 there are many more gestures that will activate functionality from the lock screen. In addition to swiping up and down, the main side swipe is far easier to execute. For example you can drag a steeper diagonals and the starting point can be anywhere on the screen.
If a lock screens purpose is to prevent accidental input, then the iOS 7 implementation fails.
I always thought that the "slide along a path" that iOS 1 implemented was brilliant. It addressed a real issue in a seamless and nearly fool proof maner. As you begin adding more to functionally to the lock screen, the design gets further away from its purpose. Honestly if you want to add that much functionality to the lock screen, just get rid of it. Lock screens are turning into a second Homescreen.
While I definitely agree with what you are saying about the lockscreen, that particular reply was in reference to what is offered to answer a call when it's coming in while the phone is locked--in that case there's only a small slider for the actual answer call button, similar to how it is in iOS 6 (and previous versions)--it looks different, but the slider target area itself and its functionality is about the same.

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As everybody else said, you're holding it wrong.. or rather.. pocketing it wrong? I don't know. Technically if the screen is facing out, there shouldn't be anything to interact with the screen unless you walk with your hands down to your sides and slightly in front with your palms or wrists resting on your pocket directly over the screen. Which in that case, you're just weird and/or awkward. Who walks like that?
Wrong or not, if something like that can even exist/apply, the point is that the lockscreen is much more responsive than before, which isn't necessarily a great thing for a lockscreen since it's main feature is to keep the phone locked until a very specific and intentional user initiated action gets it to unlock.
 
While I definitely agree with what you are saying about the lockscreen, that particular reply was in reference to what is offered to answer a call when it's coming in while the phone is locked--in that case there's only a small slider for the actual answer call button, similar to how it is in iOS 6 (and previous versions)--it looks different, but the slider target area itself and its functionality is about the same.

Sorry. I didn't mean to mis-characterize your post.
While the overall gesture appears to be essentially the same as iOS 6, I wonder if the call answer swipe has a similarly reduced precision requirement to what is observed on the lock screen. I'll need to test it out tonight.
 
As everybody else said, you're holding it wrong.. or rather.. pocketing it wrong? I don't know. Technically if the screen is facing out, there shouldn't be anything to interact with the screen unless you walk with your hands down to your sides and slightly in front with your palms or wrists resting on your pocket directly over the screen. Which in that case, you're just weird and/or awkward. Who walks like that?

I work in a warehouse and often have an issue with objects knocking into me, Sometimes on my phone. I face it toward my leg to protect the screen, case attached aswell. Never have I had this happen in ios 6. Not holding it wrong, the sensitivity is extremely high.
 
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