Coming in early April, this new smartphone application will allow players to generate one-time passwords. We highly recommend it to our users as a quick and easy way to enhance the security of your Square Enix account with your iOS or Android device.
Further details will be announced at a later date.
UPDATE: The software will be available on March 28th.
Finally! Wonder if it will be a paid or free app.
If I could use WoW as a guide, it should be free, as it will save Square Enix money from having to deal with security threats, account retrievals, etc.
Exactly what I was thinking, as well. I quit playing WoW shortly after the Blizzard Authenticator app became available, but I still have it tied to my account simply to help prevent hacking.