One Time Password (OTP) in FFXIV, short for 'Final Fantasy XIV,' is a security feature that adds an extra layer of protection to your account. It is a unique temporary code that is generated on-demand and typically used in addition to your regular password.

When you enable OTP for your FFXIV account, you will need to enter this additional code along with your password whenever you log in. This helps to prevent unauthorized access even if someone else knows your password.

OTP can be generated through various methods such as using an authenticator app on your smartphone, receiving a text message, or utilizing a hardware token. It adds an extra step to the login process but significantly enhances the security of your account.

It's important to keep your OTP secure and not share it with anyone. If you suspect any unusual activity or believe your OTP has been compromised, you should contact FFXIV support immediately to protect your account.