#cSLI
The Court correctly observes that Google's Location History service is not only *like* CSLI (see Carpenter), but it reveals SO MUCH MORE information about the cellphone holder.
June 29, 2026 at 2:55 PM
Yeah I see the argument they are making but it’s a far cry from “this isn’t CSLI” to “this is knowingly exposed to the public.”
January 8, 2026 at 5:07 PM
NEW AT SSRN: With the geofence warrant case being argued at SCOTUS this spring, I'm pleased to post Chapter 9 of "The Digital Fourth Amendment," on how courts should interpret Carpenter v. United States, the CSLI case—and how to apply it.
papers.ssrn.com/sol3/papers....
February 27, 2026 at 9:24 PM
ancient horses were smaller than you think, and there's some reasonable arguments to be made to suspect that they were gaited too. Another fascinating interview about the overlaps of horsemanship, history and archeology, highly recommend 🙏💖

www.youtube.com/watch?v=csLi...
Historian and Our Biggest Misconceptions About Ancient Horses- Interview
YouTube video by The Science of Raising Horses
www.youtube.com
May 31, 2026 at 1:23 PM
I designed a mascot for the UC Davis REALOP Cubesat Project! It will be launched through the NASA CSLI program, and its mission is to demonstrate using a hard drive disk as a low-cost reaction wheel. Here's a photo of the flight computer PCB with my silkscreen drawing and an acrylic standee of her!
December 6, 2024 at 6:42 AM
SO MUCH MORE
June 29, 2026 at 2:55 PM
FBI Tells Senate It’s Still Bypassing 4th Amendment By Purchasing Location Data From Third Parties

In 2018, the Supreme Court ruled that warrants were needed to obtain cell site location info (CSLI). That decision dealt with law enforcement's warrantless acquisition of 127 days of location data…
FBI Tells Senate It’s Still Bypassing 4th Amendment By Purchasing Location Data From Third Parties
In 2018, the Supreme Court ruled that warrants were needed to obtain cell site location info (CSLI). That decision dealt with law enforcement's warrantless acquisition of 127 days of location data from a cell service provider. As the court saw it, the government was leveraging access to this data to turn cell phones (which has been given heightened protections with the…
www.techdirt.com
March 27, 2026 at 5:58 PM
Applying the Katz test, the majority holds that individuals have a reasonable expectation of privacy in our cell phone location information, so the government conducts a 4th Amendment "search" when it invades that privacy. I think that's pretty clearly correct. www.supremecourt.gov/opinions/25p...
June 29, 2026 at 2:15 PM
Time to build that industrial cooling tower - first Oxfam purchase of 2026
January 3, 2026 at 1:29 PM
Flock and ALPRs are a scourge and should be banned nationwide or at least treated like CSLI for Fourth Amendment purposes. It was inevitable that these surveillance networks would be turned on law-abiding people seeking abortions, immigrants, etc.
Texas law enforcement used a nationwide network of 83,000 traffic cameras to build a case against a woman for aborting her fetus. Aborting her fetus is not a crime in Texas. And then everyone involved lied about it to the public.
October 7, 2025 at 2:31 PM
CSLI estimated at least $6 million
September 30, 2025 at 10:32 PM
Love to have technically detailed issues of national importance decided by judges who casually compare a measure of area to a measure of distance.
June 30, 2026 at 6:02 PM
Back to Chatrie opinion.

The Court points out that location data can be used by police (or anyone with the data) to create a *retrospective* picture of your life at almost zero cost.

In a pre-cellphone sense, this is like a police officer tailing everyone all the time.
June 29, 2026 at 3:05 PM
Officers request CSLI to ping murder suspect w/o a warrant, submit form to allow warrantless disclosure under the SCA. SC SCT: At the very least, the good faith exception to the exclusionary rule applied b/c the SCA allows emergency exception. sccourts.org/media/opinio... #N
January 29, 2025 at 8:11 PM
csli♡ ︎

me putting off watching arcane to the end because i wouldn't be able to handle it... GAAAAAAAHHHH
November 29, 2024 at 7:43 AM
There's an intellectual history to write about the evolution of the thinking of the philosophy, compsci, linguistics, sociology, psychology profs that taught this generation of VCs at Stanford and got a lot of their salary through csli.
October 13, 2025 at 10:37 PM
ELaNa XIV CubeSats Launch on JPSS-1 Mission - From NASA Marshall Space Flight Center - https://flic.kr/p/21Dt9Y7
September 11, 2025 at 2:00 AM
csli♡ ︎

SKULLGIRLS MENTIONED EEEEEEEEEEEE
December 3, 2024 at 5:10 PM
Kagan: Doesn't Carpenter address location?

Govt: We did what Carpenter instructed--we got a warrant

K: But you say you didn't need a warrant

G: Carpenter was CSLI was price of having a cell phone

K: So standard is that no one can live without the device?
April 27, 2026 at 3:17 PM
5th Cir. holds that use of a licence plate reader to obtain a vehicle's location data does not invade any reasonable expectation of privacy and so therefore does not constitute a 4A search. No warrant required.

www.ca5.uscourts.gov/opinions/pub...
March 17, 2026 at 11:27 PM
But, govt argues, services like Location History are "voluntary," unlike CSLI, so TPD should apply.

Court takes issue with what "voluntary" means in today's connected device sense.
June 29, 2026 at 3:21 PM
The work at CSLI from early-to-mid 80's is quite prophetic toward LLM's.
April 28, 2025 at 5:27 PM