Slide to unlock is the most user-friendly way to unlock a screen or activity or jump to another activity, this is mostly used in confirming the payment by payment gateway apps or switching off the alarm, etc. Even the iPhones with IOS operating system used the slider to unlock the phone. In this video we will be creating a very simple application that has two activities, one is the Lock Screen and another is the Home Screen and you can go to the Home Screen only when you slide the slider, we will be using third party dependency for implementing the Slide to Unlock feature. 

Related Article - https://www.geeksforgeeks.org/how-to-create-a-unlock-slide-bar-in-android/