Don’t you hate it when you pass your device over to a friend, only to find them perusing through all of your private photos and personal data? You could always choose to keep your device to yourself, but this isn’t always ideal. Rather, wouldn’t it be nice if you could simply make it so that your friends can only see what you want them to see?
Born out of necessity, XDA Senior Member elesbb created an app that accomplishes this very task. When activated, the aptly titled Screen Locker app locks your screen and disables device touch input. It also disables your status bar and hardware button presses. Thus, users are locked into viewing the screen that you left them with, and only the appropriate pattern can unlock the device.
The initial setup is a cakewalk. You simply open the app, enable the option for a persistent notification (necessary to activate the protection if you lack a hardware search key), and create an unlock gesture. Then, simply back out of the application, find anything you wish to share, and lock your device using the ongoing notification (or a long press of your hardware search key). To unlock the device, simply draw the pattern you created anywhere on your screen.
To prevent prying eyes, head over to the application thread and give Screen Locker a shot._________