Interview guides / ios
Keychain Usage: iOS Interview Question
Keychain Usage interview question with a clear example answer for iOS engineers. Practice with AceMobileInterview.
This is a common iOS interview topic: Keychain Usage.
Below is a concise answer you can adapt in a real interview, then go deeper in the full AceMobileInterview track.
1.What belongs in Keychain vs UserDefaults?
Secrets/tokens/credentials → Keychain. Preferences/flags → UserDefaults. Never store auth tokens in UserDefaults. Use accessibility levels and biometric access control appropriately.
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