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3-16-2011 @ 9:45AM
Not sure if someone already answered this, but the warrantied lifespan of a token authenticator is one year, and the recommended replacement point is two years. Only reason I know this is that after a couple of years, my token became "unsynchronized" with the authentication servers, and I would literally have to call Blizzard every couple of weeks to have them resync. What happens is that the numbers your token displays are no longer the numbers that the authentication server expects for that point in time, and it flunks you. I don't know how they resync it on their end, I'm not a security expert, but Blizz basically said that this can start to happen with the tokens after two years, and they recommend replacement when it does. The mobile authenticator doesn't have this issue, as there is a "resync" option built in.
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