Square Enix Security Token

A small battery powered device that generates a one time password every 30 seconds in conjunction with a Square Enix account that has been linked to a Play Online account.
Creating a Square Enix Account is free and can be done by anyone via the official Square Enix website. With this new system in place, Square Enix Accounts are compatible with FINAL FANTASY XI and PlayOnline, as well as future online services.
The new system will utilize the Square Enix Security Token, which is available to purchase for $9.99 via the PlayOnline® Viewer. 
After registering a Square Enix Account and purchasing the Square Enix Security Token, players can then assign the token to their PlayOnline ID(s). Using the token will generate a one-time password every 30 seconds for the account. Implementation of these new features is an extension of Square Enix’s commitment to continuous service for our customers.
Additionally, players who purchase a security token will also receive the brand new in-game bonus, the “Mog Satchel.” The “Mog Satchel” provides additional inventory space and benefits all characters on the PlayOnline account(s). The space provided by the “Mog Satchel” is equal to the character’s Gobbiebag capacity and can expand along with it. In order to utilize the bonus, it will be necessary for the customer’s PlayOnline ID to be linked to a Square Enix Account.
Square Enix Account Management
Create a new Square Enix Account
Using a Square Enix Account
In Game Reward: Mog Satchel
The tokens are sent out on a first-come first-serve basis. Tokens can take up to 14 days for delivery, so please be patient. Devices are shipped via USPS unless service is unavailable in which case FedEx may be used. If you have not received your Token after 14 days, please contact the Information Center.