How to control access to application?

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http://stackoverflow.com – I want to add to my application a parental control, thus limiting access to some application using a password, I tried to create a launcher application so I can check the launch from the desktop block the intent of execution of the application. But my problem is to launch application from the status bar (notification) like Setting. I want to realize some thing like AppLock an application on the playstore. Can you help please if you have an idea. (HowTos)