An FYI on the Square-Enix security Token.

[Bigfish]

Just an FYI to anyone out there, the Square-Enix security tokens being sold for FFXI are from the same manufacturer of the Blizzard ones. They follow the same 6 digit format, with a 10 digit serial number. I would surmise the two are compatible, although I'm not 100% sure on that.

Also, when they say one time password, they mean ONE TIME PASSWORD. No logging in on multiple accounts simultaneously using the same password for the same 30 second period. You have to log them in one at a time.

Just some information for anyone interested.

[Ozbert]

If by 'compatible' you're suggesting the FFXI ones might work with Blizzard accounts, I highly doubt that. They work based on cryptographic keys and Blizzard will have the keys for all the authenticators they sold stored in their authentication server, but they won't have the keys for any FFXI authenticators.

[Bigfish]

Maybe, maybe not. Kind of depends on whether the two are seperate or if both work off a single base of algorithms. If, as far as either company is concerned, an authenticator is an authenticator regardless of the face plate, they should be compatible. If they are game specific, then they're game specific. I'm just putting it out there on the off chance that someone else is playing both games, has an authenticator for one but not the other and wants to give it a try before they order the other token, wait a week or two for it to come, and then wonder to themselves "Don't I already have one of these?" like I did.

[Ozbert]

The way I understand it, these authenticators are factory programmed with a unique cryptographic key. When Blizzard buys a batch of authenticators from the manufacturer, they are also supplied with a list of keys+serial numbers that they add to their authentication server.

As Blizzard didn't buy a batch of FFXI authenticators from the manufacturer, they didn't receive the associated keys to add to their server.

You could probably try to supply the serial number of an FFXI key when you try to associate it with your WoW account, but Blizz's systems will probably just say "we didn't supply any authenticator with that serial number and we don't know it's unique key"

[mmcookies]

Ozbert is correct.

When companies buy authenticators, they're essentially buying key spaces, say, in batches of 20,000.

While the underlying hardware and algorithms might be identical, the codes are logically discrete.