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Is it possible to attach a game's authentication key to multiple accounts?

Say I have a Starcraft II: Wings of Liberty authentication key. Can I create a new account, attach that key to it (register/activate it). Then, if need be, un-register it from that account, and attach that same key to another account?

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You are referring to CD keys (game licenses), and not Blizzard Authenticators (security token generators), correct? – McKay Jul 27 '10 at 19:07
Correct, cd keys is what I mean. Although, on the actual game box, the term used is "Authentication key". – spong Jul 27 '10 at 19:28
up vote 5 down vote accepted
  • Game keys cannot be attached to two accounts. (trying to do so gives a message saying that that key is already in use)
  • Game keys cannot be unregistered or transferred by any user options. (The interface has nothing of the sort)

If this needs to be done, you'd have to contact Blizzard customer support, but I'm not sure they'll let you. They might though.


After re-reading through the TOS, there are two separate "licenses" involved (from a legal perspective), the license to use the game client, and the account to play with. The account cannot be sold. The client can be transferred, but the new owner would have to purchase a new account, that is supposedly available at or

(I am not a lawyer, my advice is not legal advice)

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does that implicitly mean, I can't sell the game? – StampedeXV Jul 27 '10 at 19:14
Do you have a link to where you found those bullets? – ahsteele Jul 27 '10 at 19:21
I tried to source those bullets with the stuff in parentheses, it's not amazing sourcing, but it's the best I can come up with. – McKay Jul 27 '10 at 19:24
And yes, that does mean that you can't sell the game. But IIRC, the terms of service does mention how transferring an entire account would work. Again, for something like that, I'd recommend talking to a Blizzard customer support representative to take care of it. – McKay Jul 27 '10 at 19:25
@Mechko the physical product does not contain the full IP, it requires an online component. If I shipped you a twitter client, I could not guarantee IP rights to twitter as I do not own twitter. The disc does contain IP rights to the client, but not to the online service. – tzenes Jul 28 '10 at 0:54

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