There are no functional changes.
The SQUARE ENIX Software Token is an application designed to strengthen the security of user accounts for playing online games by generating and requiring One-Time Passwords when logging in.
- What are One-Time Passwords?
http://www.square-enix.com/na/account/otp/
- A Square Enix account is required to use this application
(* You must also have purchased either FINAL FANTASY XI or FINAL FANTASY XIV and registered the accompanying registration codes to your account)
- Getting a Square Enix account
https://secure.square-enix.com/account/app/svc/register/
To register this application to an account, you will first need to log in to the Square Enix account management system and follow the instructions on the "One-Time Password" page.
- Square Enix account management system
https://secure.square-enix.com/
- Square Enix Software Token support center
https://support.na.square-enix.com/faq.php?c=68&q=&id=496&la=1
- Privacy Policy
https://square-enix-games.com/en_US/documents/privacy