Any finger writing app on lockscreen?

Samsung Galaxy S7/S8/S9
Is there any app that allows you to take notes drawing with your FUNGER without even UNLOCKING your phone on to LOCKSCREEN?

Process: Take phone out of pocket, press the power button and start writing notes by using finger as a pen on the lockscreen.

Just the quickest ways to whip your phone out of your pocket, write a note, and put the phone away so you can get back to your life.

There are many apps that you can write notes, but you have to unlocked or do other time wasting actions to get to the app and requires typing.
So if you know something please share with us.

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