keychain

You can use Keychain Access to reduce the number of passwords you have to remember. Keychain Access stores passwords for servers, apps, websites, and more. When you store the password to a Keynote presentation in your keychain, you won’t have to type the password each time you open the presentation.

For more information about Keychain Access and using a keychain, choose Help > macOS Help (from the Help menu at the top of your screen), then search for “keychain.”