Cloud Keychain saves a user's passwords, credit card information, and other sensitive data and syncs it across Apple devices.

A keychain password is the master password for your Mac's "Keychain Access" app, which stores your usernames and passwords.

Everyone has a different password for every service they use. Whether you use the same one for everything, which you shouldn't, or if you have a unique, strong password for each service, it's hard to ...