Who Touched My Phone is an application for smartphones and tablets, which allows you to find out who took your phone without your permission.

The application is quite easy to use and doesn't require any special skills. All you have to do is launch the app and enable the "screen unlock monitoring" function. When this is enabled, the app takes a photo when somebody unlocks your device. This is not noticeable, and the photos captured won't be stored in your gallery.

It is a great tool to know who tries to snoop around your phone. You can download this on Android devices.