A free program for Android, by Carroll.Studio.

In the modern world, people have more and more things to keep safe. This is especially true for mobile devices. We use a password, a pattern, or even a picture password to protect our files and apps. But what if someone wants to get into your phone? What if they find the password? What if they see the picture you set as the password? You don’t want that, do you?

With this app, you can lock your mobile device with a picture. It is the best way to protect your privacy. The app also provides you with the option to set different shapes for the lock screen button.