Updated Oct 10, 2020 · 2 min read

What is a password?

A password is a series of characters that enable a user to sign in to a system, such as a file system, application, or program. A user generally defines their password along with their username. Passwords help to ensure that only authorized users can access a system. When choosing a username, you should pick something difficult or impossible for others to guess.

Related Terms


Authentication is the process of verifying the identity of a user. A common form of authentication is username password authentication...


A username (or user name, user ID, or account name) is a name that uniquely identifies a user in a system.