I did a video card upgrade the other day and noticed that when I logged into ESO I was asked to authenticate my account. The software had not been touched, the computer was the same just a new video card.
I thought this odd and so tested by moving my old video card to a second system that uses a different account. Before I did this I logged into ESO with no issues. New card in and sure enough I had to authenticate again.
I understand using IP information to authenticate a system, but actual hardware monitoring?
True honor need not be named