December 18th, 2012 at 1:20pm
From December 17 2012, physical products including Battle.net Authenticators will be temporarily unavailable on the Blizzard Online Store in Europe. This is in preparation for a revamp of the store which will take place during 2013. In the meantime, many items can be found on the US Blizzard 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 get hold of one from several sources including the online retailers and high-street stores listed here.