Lock Screen

Very simple project we want to have an lock app to let the users able to choose from several "timer" lock, i.e., we want an app to let the user to choose how long it will have his or her Iphone locked, for instance: 5 min, 10 min, 15 min and after this time, the Iphone will be released automatically and be able to work without lock (time-out) See the attached file for some more info Please contact me for further questions