MyOTP
Korea Mobile Certification
Google Authenticator
Google LLC
Microsoft Authenticator
Microsoft Corporation
Okta Verify
Okta Inc.
TOTP Authenticator – 2FA Cloud
BinaryBoot
PASS by KT - 인증을 넘어 일상으로 PASS
KT Corporation
短信
Delicious
Authenticator App
Starnest JSC