Carrier-assisted location
Cell site and carrier
This page is public-interest research. An argument grade is not a court finding. A watchdog page describes the device. It is not proof a Nevada agency bought it or turned a feature on. A product description is not a Nevada practice. Agencies are not merged: the City of Las Vegas Department of Public Safety, the Las Vegas Metropolitan Police Department, the Clark County School District, the City of Reno, and the Nevada Department of Public Safety stay separate. A hotlist hit is not a confirmed crime. Legal review of this page is unverified.
What it does
Carrier-assisted location is the phone company’s own record of which cell sites a phone used. Historical cell-site location information is the usual form. The government asks the carrier, rather than buying an advertising feed or running a simulator. A warrant is the constitutional rule for the circumstances Carpenter addressed. That rule is not a file from a Nevada agency.
Privacy watchdog concerns
No watchdog page is attached.
Constitutional issues
Established legal holding
Fourth Amendment, Nevada Constitution art. 1, § 18
A decision discusses legal process for this kind of technique. No Nevada agency practice is documented here.
Carrier-assisted location: Carpenter is the established holding for historical cell-site location information in the circumstances it addressed, and the Stored Communications Act is the provider-records statute to read. Neither document is a Nevada agency file. No Nevada carrier-location program is confirmed on this page.
- Carpenter v. United States, 585 U.S. 296 (2018). Established holding for this kind of technique. United States Supreme Court. A warrant is generally required for historical cell-site location information in the circumstances Carpenter addressed. That is not a finding about any Nevada agency.
- Smith v. Maryland, 442 U.S. 735 (1979). Counterauthority. United States Supreme Court. Smith held that a pen register for numbers dialed was not a search on its facts. Carpenter declined to extend that reasoning to historical cell-site location information.
Statutes attached to read, not findings.
- NRS Chapter 239. Nevada public-records law is the route to ask for contracts, policies, and logs. Citing it is not a finding that a surveillance practice is unlawful.
- Nevada Constitution art. 1, § 18. State search-and-seizure provision. This page does not quote the section. No section anchor was verified. It is listed only where a search question is actually implicated.
- 42 U.S.C. § 1983. A civil remedy for a deprivation of federal rights under color of state law. It is not a warrant statute, and it does not itself make a surveillance practice unlawful.
- 18 U.S.C. §§ 2701–2713. Stored Communications Act provisions for some provider-held records. Attached only to stored communications or carrier records, as the statute to read. Not a finding of a violation.
Nevada use
Not documented on this page as a Nevada agency practice. The warrant rule is the Supreme Court holding for the circumstances Carpenter addressed.
Legal standard only. Nevada use is not documented.
See also: Tower dumps; Fog Data Science
Next record
Carrier-assisted location: Request each agency’s policy. Do not treat the Fog contract as a carrier order.
All devices. A document workflow for this page is not built. The arrest correction form is not a surveillance-document inbox. Corrections and source documents for this page follow the corrections policy. Corrections policy.