The best lock screen application, to help you protect your privacy, prevent others invade your phone illegally
This lock screen photo have features: lock screen, Create image for button from your gallery, and turn off screen by shortcut

Create lock patterns to lock your phone
★ Create pattern for lock screen
★ Fast, simple, smooth, easy to use and very beautiful
★ Create a separate image for each lock button. very interesting
★ You can add photos of relatives for the lock screen button
★ Personalize your lock screen
★ Set your photos into buttons
★ Change color and size of date/time
★ A lot of beautiful wallpapers
★ Photo Lock Screen also allows to use wallpaper from Your gallery
★ Select from a wide range of inbuilt backgrounds
★ Allows to use wallpaper from Your gallery
★ Add your name our your love sentence to lock screen
★ Change color and size of your sentence
★ Disable HOME/MENU/BACK button in Pattern Lockscreen, it means that no one can access your phone without right password or passcode (very security)
★ Security: easy to set pattern password to protect your phone
★ Support your languages
★ Support almost phones and tablet devices
★ Consume less memory and battery

Create a separate image for each lock button. very interesting.
★ Personalize your lock screen
★ You can add photos of relatives for the lock screen button

Turn off screen by shortcut
★ Create shortcut or icon for screen off and lock
★ useful when power button deranged, hard to press or if you want protect power button
★ note: you must activate system admin

Permission
In my application, I use permission: android.permission.BIND_DEVICE_ADMIN.
I use BIND_DEVICE_ADMIN permission for feature: Turn off screen.