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> No, because the PIN is tied to the device and becomes invalid much more quickly. A Windows password is potentially used in far more places and potentially across many devices.

I'm talking about the password classic here. It didn't go away. It remains one of the now two methods for signing in. Now there is also a second one while the original still exists, is it more secure? I don't see how two doors is stronger than one.

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All else being equal, two access methods are strictly less secure than a single access method. But is all else equal? I suspect that there are quite a few people who are willing to use a long, complicated password occasionally but who won't put up with that for passwords that are used frequently. If those people use better passwords when they can use a PIN to make routine access easy, that's a win.

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