What's the best pattern for public facing user IDs?

1. What is a good user ID?
2. What is an example of a user ID?
3. Is user ID the same as username?

What is a good user ID?

Your username should be simple enough to remember but hard to guess. Never use easy-to-guess numbers with your usernames (for example, address or date of birth). Don't use your Social Security number or ID number as your username. If you're struggling, try an online username generator.

What is an example of a user ID?

A user ID is a unique identifier, commonly used to log on to a website, app, or online service. It may be a username, account number, or email address.

Is user ID the same as username?

A user ID may also be termed as username or user identifier.