Is this something that you want to do?
Or, something that you want to prevent?
Save your password in notepad (or whatever is used for notes/etc on android)
Copy and paste when you need the pw.
(OK, maybe not a great solution, but something that I might do, regardless of the security considerations)
Do you have a password manager that you can use on Android?
You continue to add complications to what should be simple
So, you want to make it easier for your family members to connect?
(or, keep them out?)
(Maybe teach your family how simple it could be to use a password manager... )