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Battle.net Authenticator - for your World of Warcraft or Battle.net accounts.
The physical Battle.net Authenticator is currently unavailable for purchase on the European Online Store. Players wishing to acquire a Battle.net Authenticator have several options. The Battle.net Mobile Authenticator is available for many types of smartphone, and you can find out more about it here. For many people, this is the easiest and cheapest option! If you prefer to have a physical Battle.net Authenticator, you can now get hold of one from several sources including online retailers and high-street stores.