Add PIN Based Authentication

[crimsonleaf363]

Summary

I would like an optional PIN based authentication method to the app.

Basic example

1. The user opens the app.
2. The user creates a backup.
3. The user navigates to the "Security" menu.
4. The user is given the option to create a PIN for the app.

Motivation

• Adding PIN based authentication provides an extra layer of security for those who want it. Some users prefer not to use passwords.
• This is a convenient and easy to use alternative authentication method.

[TonyGiorgio]

Some users prefer not to use passwords.

So we have password auth but not pin auth. You can still just type a few numbers in if you wanted for the "password". I don't think we have a length requirement for it, so it could just be 4 - 8 digits if you wanted.

[crimsonleaf363]

Some users prefer not to use passwords.

So we have password auth but not pin auth. You can still just type a few numbers in if you wanted for the "password". I don't think we have a length requirement for it, so it could just be 4 - 8 digits if you wanted.

I'm aware that the password authentication method is an option. If you simply enter a few numerical digits as the password, you will need to use the default keyboard that includes both letters and numbers. If it were a PIN authentication method, you could have the app provide a numerical keyboard only, or you could create another PIN layout.