> ## 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 Locker?

> Locker is a password manager that helps you store, manage, and autofill passwords securely across all your devices.

Locker is a password manager developed by CyStack that helps you store, manage, and protect your passwords and other sensitive information across all your devices.

## What can Locker do for you?

* **Secure storage:** Passwords, notes, payment cards, crypto wallets, and identity information are protected with end-to-end encryption.
* **Autofill:** Automatically fill in login credentials on browsers, mobile apps, and desktop applications.
* **Cross-platform sync:** Data is synced across Web Vault, mobile apps (iOS, Android), desktop apps (Windows, macOS, Linux), and browser extensions.
* **Password sharing:** Securely share passwords with colleagues, friends, and family.
* **Security checks:** Assess password strength, detect compromised passwords, and generate strong passwords.

## Locker's security

Locker uses **AES-256-CBC** encryption combined with **Zero-Knowledge Encryption**, meaning only you can access your data — not even CyStack can read it.