> ## Documentation Index
> Fetch the complete documentation index at: https://support.locker.io/llms.txt
> Use this file to discover all available pages before exploring further.

# What Is a Master Password?

> The Master Password is the single password used to unlock your Locker vault.

The **Master Password** is the only password you need to remember to access your Locker vault. It is the key that encrypts and decrypts all data stored in Locker.

## Key characteristics

* **Only you know it:** Locker uses a Zero-Knowledge model, so your Master Password is never sent to or stored on the server.
* **Cannot be recovered:** If you forget your Master Password, Locker cannot help you retrieve it. Make sure to keep your password hint in a safe place.
* **Security requirements:** Your Master Password should be at least 12 characters long and include uppercase letters, lowercase letters, numbers, and special characters.

## Tips for protecting your Master Password

1. **Do not reuse it:** Never use your Master Password for any other account.
2. **Create a memorable passphrase:** Use a sentence that is personally meaningful to you to create a strong yet memorable password.
3. **Enable two-factor authentication (2FA):** Add an extra layer of protection to your Locker account.