As you are all aware with the new features of iOS 7, it offers not only notification center but also a control center. You can access the Notification center by swiping down from the status bar and access control center by swiping up from the iOS dock at the bottom of the screen. It is possible that by mistake you access these two centers by accidentally performing the swipings while playing games in full screen or working in some application.
This tweak “NoGrabber” helps prevent by opening the Notification and Control center by mistake by forcing a warning grabber to appear rather than completely access these interfaces directly in the middle of a game.
You should be familiar with the warning grabber. Its an iOS extra feature to make sure these mistakes are avoided when you swipe up or down to open these features. When you do that, a grabber appears and then you need to perform the swipes again on these warning grabbers to access the notification or control center. These appear only in full screen application or games.
What this tweak does is, it applies the warning grabber in every application regardless of whether it is in full screen or not. It adds a preference pane to the settings menu and it only has one tab named as “White List”. Basically it is like a black list where you add the application in the list in order to display those warning grabbers every time the wrong swipes are made.
Not adding the applications in the “White List”, the notification and control center open normally as they usually do without displaying the warning grabber.
If you want to give this a try, it is available on Cydia for free. iOS 7 is a must for this tweak to function properly.