I was trying to sign in to siriusxm.com. A box came up that said "Please insert your security key", with a diagram that looks like a flash drive. It said the request came from FireFox Mozilla Corp. Is this one flashdrive key that will work for everything Firefox Mozilla Corp wants to guard, or it is something required by SiriusXM? I've never heard of it, but have seen it pop up for two or three things in the last week. I don't know how to satisfy the requirement. I looked though the topics on FireFox help page, and nothing mentions it that I can find.