It took less than 24 hours for someone to find a way to break through iOS 7's pass code feature, and wouldn't you know it, the new Control Center is to blame. By going through a rather simple series of swipes and taps, a user can bypass the lock screen on some iOS 7 devices. You start in the Control Center, switch to the Timer, then double-tap the home button which lets you access the Multitasking feature, allowing you to browse apps without having to unlock the device.
I say "some" because there's a rather simple tweak you can perform that will pre