The answer to this is that Microsoft, who, after all, really does know who you are, automatically provide it.
I mean that if you are on your own computer, running your copy of Windows XP/Vista/7 and logged in properly, and say, using Outlook, it should authenticate your emails. Obviously Google/Yahoo/MSN should facilitate that authentication as well.
Enterprise users, same goes for them, only you on your work station, IT knows who you are as well, right?
Discussion on:
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