Security Token Battery Life?

[Soukyuu]

I don't think it's necessarily 30 seconds, or 10 minutes. Have you ever pressed the token and then pressed it again immediately after? The code is always unique, as though it follows an algorithm unique to YOUR token and will never use the same code twice.

Actually, if you turn it off and immediately on again, you will see the old code. At least on mine.

It's probably just a list or algorithm that blocks all old codes when you enter a new one.

You'd have to save all the old codes then though, which seems unlikely to me