Help me to add pin or password to my app?

Can anybody share with me a video or an article that can help me to add pin or password to my app? I don’t want mobile pattern or pin to be used in app.
It is like an diary app so a simple password system is needed.

use tinydb and store a tag with your password if you want offline app, and if its an online then use any database like firebase or airtale etc, you will find tutorial on Youtube,

First search the community questions and answers. You will find your answer there.

well I have searched on community before. There was no post regarding what I want. If you have find some then share with me…

I found it within 5 seconds by typing: “pin”

How to create a Pattern Lock Mechanism with App Inventor and some JavaScript


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