How to generate my name in Korean?

How does Dropbox's new Carousel app generate the "Continue as [Name]" sign up button?

• I never have to sign into Carousel. It knows my name, asks me to continue as my name, then just works. No typing in email address, no creating a password, no sign in as Google+/Facebook et al.

• Answer:

  On iOS, keychain data can be shared between applications from the same organization. Carousel uses the keychain API to share authentication credentials with the Dropbox app. For more info, read about the "kSecAttrAccessGroup" key from Apple: https://developer.apple.com/library/mac/documentation/security/Reference/keychainservices/Reference/reference.html