If it's ip driven then there's no reason to lock me out, since i was logged in on my account, then i logged in with my laptop and got locked out moments after I logged in with my main. I closed down and re-opened to see if i could get in on my main computer and bam, no good.

And for the record, I have 4 CE's and one standard. So I have 4 security tokens already. I had one in use for a while, but after it getting handed off a hundred times, you never know who had it last, and so on, it became more of a hassle than it was worth, by far. I'm not worried about my account being compromised, everyone handling login credentials either only ever plays the game exclusively, no web or otherwise, or they know not to give out login and password information.