A password is a secret combination of letters, numbers, and symbols used to authenticate a user’s identity. It serves as a security measure to protect access to accounts, devices, and sensitive information. When creating a password, it is important to choose one that is difficult for others to guess, often by using a mix of characters and avoiding easily obtainable information like birthdays or names. To enhance security, many people use password managers, which are tools that store and generate complex passwords. Additionally, some services offer two-factor authentication (2FA), which requires a second form of verification, such as a code sent to a mobile device, further protecting accounts from unauthorized access.