Samsung Galaxy Note 8 is equipped with pretty advanced features which are not yet available on Samsung Galaxy S7 / S7 Edge, S8 / S8 Plus smartphones. One of the pretty cool feature is Live Message, which is exclusively available for Note 8, since it has stylus to draw live messages with very cool visual effects.
Mweinbach an advanced Android user and member of XDA Developers has extracted Live Message APK files from Galaxy Note 8 and modified them to work with Samsung Galaxy S8 / S8 Plus. Although Live Message APK can be installed on any Samsung Phone with Android Nougat.