With the Supreme Courtroom set to listen to oral argument on April twenty seventh in United States v. Chatriethe geofence warrant case, I am happy to have the ability to publish The Carpenter Adjustment, which is Chapter 9 of my 2025 guide, The Digital Fourth Modification. Within the chapter, I clarify what I feel Carpenter means, the strikes it’s making, and the way I feel courts ought to interpret it. You may learn the chapter right here.
Here is the chapter abstract:
The chapter considers how courts ought to interpret Carpenter v. United States (2018), the Supreme Courtroom’s blockbuster ruling that cell-site location data are protected underneath the Fourth Modification. Carpenter is the Supreme Courtroom’s equilibrium-adjustment for noncontent community info: it acknowledges that some community metadata is new and that the interpretation from bodily area to community environments ought to deal with some metadata otherwise. The query is, Which Web information qualifies? This chapter develops a three-part take a look at to use Carpenter to Web info. It then applies the take a look at to a couple essential kinds of Web info, corresponding to Web protocol addresses, geofence warrants, journey info, and Google search phrases.
Ideally one would learn this chapter within the context of your complete guide, however I feel this 20-page chapter stands by itself comparatively properly.
