Go, you can protect your apps with a password lock, pattern lock, or fingerprint lock, whichever is most convenient to you. If you wish to keep changing your lock formats, you can do that too. With these locked apps, you can be rest assured that just in case anybody gets hold of your phone, they will not be able to view any data without the PIN, password, or fingerprint that you have set. In simple terms, your phone’s authority remains with you!