United States v. Gibson
A Seventh Circuit decision treating state-court orders for 90 days of precise, real-time phone location data as constitutionally valid warrants supported by probable cause and particularity.
Executive Summary
South Bend investigators used controlled heroin purchases to corroborate an informant’s report about a drug-trafficking phone. They then obtained a state judge’s order directing the carrier to provide 30 days of precise, real-time GPS location data. Two later orders extended the tracking for another 60 days. David Gibson and Jerry Harris argued that the orders were not warrants and that the tracking violated the Fourth Amendment. The Seventh Circuit assumed the tracking was a search but held that the orders functioned as warrants: a neutral judge issued them, the supporting affidavits established probable cause, and each authorization particularly identified the target phone and location information sought. The controlled buys linked the phone to continuing heroin sales, and the time limits did not make the authorizations overbroad.
Key Holdings at a Glance
Investigation and Procedural History
An informant supplied the phone number allegedly used by South Bend heroin dealers. Officers tested the information through a sequence of controlled purchases. Informants or undercover officers called the number, followed the resulting directions, and bought heroin.
Investigators presented those facts to a state judge. The judge authorized the carrier to disclose precise, real-time GPS data for the phone. Renewed applications described additional evidence and obtained two further periods of tracking. The location evidence helped investigators identify Gibson and Harris as leaders of the conspiracy. A federal jury convicted both men of conspiring to distribute at least one kilogram of heroin.
Why the Court Orders Counted as Warrants
The Fourth Amendment does not require a document to carry the word “warrant.” The constitutional inquiry focuses on substance. The Gibson orders were issued by a state judge, based on sworn applications, and authorized defined investigative conduct.
The Seventh Circuit evaluated the familiar warrant elements: neutrality, probable cause, and particularity. Because the orders met those requirements, their captions did not control.
Probable Cause for Real-Time Tracking
The applications did more than repeat an untested informant’s claim. Officers independently corroborated the phone’s criminal use through controlled heroin buys. The same number repeatedly connected purchasers with sellers and instructions for completing transactions.
Probable cause did not require officers to identify the phone’s user with certainty before tracking. The relevant question was whether there was a fair probability that location evidence from the specified phone would reveal evidence of the trafficking operation.
Particularity: Target and Data
The authorizations identified the phone number and the category of evidence the carrier would disclose: precise, real-time GPS location information. That description constrained both the carrier’s production and the officers’ use of judicial authority.
The Constitution did not require the applications to name the phone’s owner. Probable cause may focus on a place, object, account, or device likely to contain evidence rather than a known suspect.
Duration and Renewals
The first order authorized 30 days of tracking. Similar affidavits supported two additional orders, producing a total of 90 days. The court rejected the argument that duration alone defeated particularity or probable cause.
Renewal still requires current facts. A defined time period is not a substitute for demonstrating that the device remains connected to ongoing criminal activity. Applications should identify developments during the prior period and explain why continued tracking is justified.
Good Faith and Suppression
The district court upheld the search and alternatively invoked the good-faith exception. The Seventh Circuit agreed that the orders were constitutionally valid warrants, so it did not need to decide whether officers’ reliance would independently prevent suppression.
Agencies should not treat good faith as a drafting shortcut. Clear technology disclosure, current probable cause, precise target identifiers, data limits, and documented compliance provide the strongest foundation.
What Gibson Does—and Does Not—Establish
- It assumes, rather than definitively decides, that the precise real-time tracking was a search.
- It concerns provider-produced GPS location for a known phone, not every form of cellular surveillance.
- It permits device-focused probable cause without certainty about the device user’s identity.
- It does not authorize communications content.
- It does not eliminate the need for fresh facts when tracking is renewed.
- It does not approve geofence, tower-dump, or canvassing collection involving unknown devices.
Gibson and Related Location Decisions
| Case | Location Method | Central Rule |
|---|---|---|
| Carpenter v. United States | Historical CSLI | Seven days of historical CSLI generally requires a warrant. |
| United States v. Sanchez-Jara | Active signal capture for known phones | A probable-cause warrant identifying target phones satisfied particularity. |
| United States v. Gibson | Provider-supplied precise real-time GPS | Judicial orders functioned as valid warrants based on probable cause and particularity. |
| United States v. Artis | Cell-site simulator | Detailed fugitive-tracking facts supported probable cause. |
Agency Operations Checklist
- Identify the target phone by number and all available unique identifiers.
- Describe the technology and whether the carrier, device, or police equipment generates the location result.
- Establish the device-to-offense nexus with dated, corroborated facts.
- Specify the exact location data requested and exclude communications content unless separately authorized.
- Use a defined activation period and stopping condition.
- For every renewal, provide fresh investigative facts and results from the prior period.
- Preserve applications, affidavits, orders, returns, provider records, access logs, maps, and derived reports.
- Confirm compliance with current statutes, provider process, agency policy, and controlling jurisdictional law.
Litigation and Review Checklist
- Determine whether a neutral judge issued the authorization on sworn facts.
- Identify the exact location technology and the precision of the data.
- Test the nexus among the device, suspected offense, and evidence sought.
- Compare the application, order, production, and actual use.
- Examine the duration and factual basis for each renewal.
- Check target identifiers, data categories, geographic limits, and content restrictions.
- Separate the merits of the warrant from any alternative good-faith analysis.
- Apply controlling authority adopted after Gibson.
Frequently Asked Questions
Did Gibson hold that real-time phone tracking is a search?
Not definitively. The government did not dispute the point, and the court assumed a warrant was required for the appeal.
Why were “court orders” treated as warrants?
They were issued by a judge and satisfied probable cause and particularity. Their function, not their label, controlled.
Did investigators have to know who possessed the phone?
No. The controlled buys established probable cause that the specified device was being used in heroin trafficking.
Was 90 days automatically too long?
No. The tracking occurred under three time-limited judicial authorizations. Continued tracking must remain supported by current facts.
Does Gibson authorize cell-site simulators?
It addresses provider-supplied real-time GPS data, not direct simulator deployment. Simulator cases raise additional disclosure and non-target collection issues.
Primary Authorities and Related Law
Published appellate opinion affirming the real-time phone-location authorizations.
Read the official opinion record
Supreme Court decision recognizing protected privacy in historical cell-site location records.
Read Carpenter v. United States
Totality-of-the-circumstances standard for probable cause.
Read Illinois v. Gates
Final Assessment
United States v. Gibson shows that constitutional warrant analysis is practical. A judge’s authorization for precise, real-time phone location can qualify as a warrant when the application establishes a concrete device-to-crime nexus and the order identifies the target and data with particularity. The caption cannot cure a deficient order, but an imperfect label does not invalidate an authorization that contains the required safeguards.