Use APKPure App
Get 나온OTP old version APK for Android
The One Time Password (OTP) shown generates a two-step verification code on your phone.
Two-factor authentication makes your groupware account more secure by putting an extra level of security for authentication when you log in.
The login process differs as follows:
1. Enter your ID and password when logging in to Groupware.
2. In the verification step, log in by entering the verification code generated in the OTP app.
You can use the groupware service more safely with the released OTP.