What are the main advantages and disadvantages of using Keychain for storing security data?

Advantages of using Keychain:

• Security: Keychain encrypts data and stores it in a protected storage accessible only to the app or group of apps.
• Convenience: The system manages storage and access to data, simplifying work with passwords, tokens, and other secrets.
• Integration with iOS: Keychain supports biometric authentication and synchronization via iCloud.

Disadvantages:

• Access complexity: working with Keychain requires using special APIs, which can be more complex than storing in UserDefaults.
• Volume limitations: Keychain is not designed for storing large amounts of data.
• Possible issues with synchronization and access when changing devices or users.