Which keychain is which on your Mac, iPhone, and iPad

Apple stores passwords and other secrets in a keychain on your device–but is it the Keychain? The difference confuses some readers. Generally, it works like this:macOS: The operating system maintains multiple keychains, which you can view via Applications > Utilities > Keychain Access. This tool can manage some low-level encryption details, like certificates, and will show at least a System and login (lowercase) keychain. Your login keychain contains the items used fo