Authenticators to be required to play WoW?

[Mavfin]

Wrong. The product is sold and offered in the Netherlands. So Dutch law applies.
Yup, it put a lot of people in knots. However, the judge will always take in consideration what is 'reasonably expected'. Authenticators are in the grey zone. Copying the game is clearly illegal. etc.

What it really comes down to is this, though:

If Blizzard wants to change the terms to include authentication, they can at any time do so, and say that if you don't want to abide by those terms, you can't play the game, and they won't take any more money from you, or refund game time you've paid for after a certain date, if they wish to.