Is two-field confirmation for emails or passwords user-friendly? [duplicate]

1. Should you have a confirm password field?
2. Why do users need to provide their password twice?
3. What does password confirmation mean?
4. Which method would be more appropriate in the form where a user enters a password such as a login form?

Should you have a confirm password field?

Confirm Password Fields Lower Conversion Rate

This is because a password field masks the user's input. If users mistype their password, they won't recognize it. The confirm password catches typos by prompting users to type their password twice.

Why do users need to provide their password twice?

It is to avoid typos. If you have to type the password twice chances are you'll make your password what you want. They want to avoid having people whose password is "blah" having to retrieve their password later on because they typed "blaj" by mistake.

What does password confirmation mean?

Generally, “confirm your password” is one of such verification & validation checks. Basically, it means to rewrite or retype your password. It ensures that you have typed the correct characters for your password by comparing both the fields.

Which method would be more appropriate in the form where a user enters a password such as a login form?

Note: Any forms involving sensitive information like passwords (such as login forms) should be served over HTTPS.