So DoubleSign is pretty cool for financial apps because it signs `scope` on two devices. First prototype had that feature. But it was very unclear to the users.

So DoubleSign is pretty cool for financial apps because it signs `scope` on two devices. First prototype had that feature. But it was very unclear to the users. So it was removed, but will be added back if this 1.0 version gets used by well... anyone at all :)