Glossary term
Password manager
An app or service that stores your passwords in a protected vault.
Reviewed 15 August 2026
Definition
An app or service that stores your passwords in a protected vault and can create long, unique passwords for each account.
In plain English
Instead of remembering (or reusing) many passwords, you remember one strong main password or passphrase that unlocks the vault.
Why it matters
It makes using a different, harder-to-guess password for every account realistic without relying on memory alone.