All the iOS 7 users be aware its a complete risk any one can bypass your locked screen and share your photos.
- Swipe up on the locked phone to get to the control panel
- Open the stopwatch app
- Go over to alarm clock
- Hold the power button until you get the "Power down" prompt
- Hit the cancel button and immediately hit the home button twice, holding it down just a little longer on the second press. huhahahahaha..... :P
Now you are in targets mobile do any thing you want to do.
You can skip this by turning off Control Center access on home screen.
How to do that:
Just go to Settings -> Control Center -> and set Lock screen Access to off.
Lock screen is awesome guyz and its by default on so please turn off it until this issue resolved.