Use iCloud Keychain to keep your website and app passwords, credit card information, Wi-Fi network information, and other account information up to date across all of your approved devices and Mac computers. (iOS 7, iPadOS 13, OS X 10.9, or later required.) iCloud Keychain is secured with 256-bit AES encryption during storage and transmission, and its data cannot be read by Apple.
iCloud Keychain can also keep the accounts you use in Mail, Contacts, Calendar, and Messages up to date across all of your iPhone, iPad, and iPod touch devices and Mac computers.
If you didn’t turn on iCloud Keychain when you first set up your iPod touch, go to Settings Set up iCloud Keychain.