But it is still controlling law in the area of pen registers applied to single individuals, right? Knotts raises some uncertainty as to whether dragnet surveillance should be under the same rules, and at least 5 justices in Jones v. United States clearly articulated that it was different for long-term, widespread surveillance of this sort.

So I am questioning as to whether Smith controls the Verizon order as it is. I am not sure a simple "yes" is possible.