Security is must for all android users and because of this application developers have developed CM Locker app. This is the one of the best app available for android users to keep their things that are present in phone and SD card safe and secure all the time. People can easily customize the locking systems that are present in this app. They can select an avatar for their locking system instead of passwords and patterns. This makes it different from other locking applications that are present in Google play store. So, get this security app and keep your data completely safe.