Opening an account with KakaoBank—a prominent digital-only mobile bank in South Korea—requires meeting specific identification and device registration criteria. Because KakaoBank operates entirely through smartphone technology without physical brick-and-mortar branches, users must download the official KakaoBank application from the Google Play Store or Apple App Store. To complete the digital identity verification process, applicants must be at least seventeen years old, possess a valid South Korean resident registration card or driver's license, hold a mobile phone registered under their own name, and have an existing account with another traditional Korean bank for initial small-amount verification transfers. The app guides users through a quick selfie scan and password setup to activate banking services.