Can I have two security tokens linked to my account?

[Umo]

As far as I know, you can only have 1 security token linked to a given account. Anyways, IIRC you won't get the changing password request if you activate the token that you already have.

[Whax]

As far as I know, you can only have 1 security token linked to a given account. Anyways, IIRC you won't get the changing password request if you activate the token that you already have.

Yes, but I will need to carry it with me to everywhere ; ;.

[Umo]

Yes, but I will need to carry it with me to everywhere ; ;.

You do carry your home keys everywhere, don't you? At least you should Attach your security token to your home keys and you're done.
If you're referring to different devices placed on the same building... well, is that hard to take your security token with you? I mean, it's not as if you're carrying a big pink elephant...