State v. Earls
The New Jersey Supreme Court decision requiring a probable-cause warrant for police access to cell-phone location information, subject to emergency aid and other recognized warrant exceptions.
Executive Summary
During a burglary investigation, police sought to locate Thomas Earls and his former girlfriend, whose safety they believed might be at risk. Without obtaining a warrant or court order, officers asked T-Mobile three times in one evening to identify the general location of a cell phone associated with Earls. The final trace led officers to a motel, where Earls was arrested and evidence was found. The New Jersey Supreme Court held that Article I, Paragraph 7 of the New Jersey Constitution protects a reasonable expectation of privacy in cell-phone location information. Because cell phones continuously reveal their location and can expose private movements, associations, and visits, police generally must obtain a warrant supported by probable cause before securing that information from a provider. The court preserved emergency aid and other recognized exceptions, applied the new rule to Earls and future cases, and remanded for consideration of whether an exception justified the search.
Earls is especially important because it rejected the assumption that information loses constitutional protection merely because a service provider necessarily receives it. The decision anticipated several privacy concerns later reflected in the United States Supreme Court's federal analysis of historical cell-site records in Carpenter v. United States.
Key Holdings at a Glance
Investigation and Warrantless Location Requests
Middletown Township detectives were investigating residential burglaries in January 2006. A stolen cell phone led police to a man who said Earls had sold him the device and stored stolen property in a unit rented by Earls or his former girlfriend, Desiree Gates. Gates cooperated, and officers found property they believed was stolen in the storage unit.
The next day, Gates's cousin expressed concern that Earls had learned of Gates's cooperation and threatened to harm her. Police located a prior domestic-violence report and obtained an arrest warrant for Earls on a receiving-stolen-property complaint.
Officers then contacted T-Mobile to locate a phone believed to be used by Earls. At roughly 8:00 p.m., 9:30 p.m., and 11:00 p.m., the provider supplied general cell-site areas. The third trace led police to the vicinity of a motel in Howell, New Jersey. Officers found Earls's vehicle, located him with Gates in a motel room, arrested him, and recovered evidence associated with the burglary investigation.
Why the Tracking Technology Mattered
The court examined how powered-on phones repeatedly communicate with nearby cell sites even when a user is not actively making a call. Providers can use those network contacts and other technologies to estimate or determine a device's location.
The court emphasized that technical capabilities change. A coarse cell-sector estimate may become increasingly precise as networks add smaller cells, GPS-assisted services, Wi-Fi positioning, and other location systems. Courts should not attempt to reset constitutional protection every time accuracy improves by another increment.
| Technical Feature | Privacy Significance |
|---|---|
| Automatic network registration | Location can be generated without a deliberate user request to be tracked |
| Repeated updates | Multiple points can reconstruct movement rather than reveal only one location |
| Public and private coverage | A signal may disclose presence inside a home, motel, medical office, or other protected place |
| Increasing precision | Location inferences can become more detailed as networks and devices evolve |
| Association data | Patterns may reveal religious, medical, political, intimate, and social relationships |
Procedural History
| Stage | Result |
|---|---|
| Trial court suppression hearing | Recognized a state constitutional privacy interest but admitted the evidence under the emergency aid doctrine |
| Guilty plea and sentence | Earls pleaded guilty to burglary and theft under a negotiated disposition |
| Appellate Division, 2011 | Held that Earls lacked a protected privacy interest in the general location of his phone and affirmed on other grounds |
| New Jersey Supreme Court, 2013 | Reversed, recognized the privacy interest, announced a probable-cause warrant requirement, and remanded for exception analysis |
| Appellate Division on remand, 2014 | Held that emergency aid and other warrant exceptions did not validate the warrantless location requests; reversed and remanded |
Independent State Constitutional Protection
The holding rests solely on Article I, Paragraph 7 of the New Jersey Constitution. Although its text parallels the Fourth Amendment, New Jersey courts have interpreted it to provide greater protection in several information-privacy settings.
The state court therefore did not need to predict the federal constitutional answer. It developed an independent state rule grounded in New Jersey precedent, the revealing nature of location data, and the practical realities of modern cell-phone use.
Provider Records and the Third-Party Doctrine
The State argued that Earls lacked a reasonable expectation of privacy because T-Mobile possessed the location information. New Jersey precedent, however, does not treat disclosure to a bank, telephone company, internet provider, or similar intermediary as automatically eliminating all constitutional protection.
Cell-phone users must interact with a network to receive service. The court reasoned that people obtain phones to communicate and use digital services—not to permit government tracking. Necessary technical exposure to a provider was therefore different from knowingly inviting unrestricted police access.
The Court's Privacy Analysis
Location information can reveal far more than travel on public roads. It can identify visits to doctors, religious services, political events, stores, homes, and private gatherings, as well as the people with whom a user associates.
Phones also blur the traditional distinction between public and private space. Officers requesting location data cannot necessarily know in advance whether a device is on a public highway, inside a motel room, within a residence, or at another constitutionally sensitive location.
The court treated cell-phone tracking as a practical substitute for persistent physical surveillance—one that can operate continuously and at low cost without the resource limits that traditionally constrained police observation.
The Probable-Cause Warrant Rule
The New Jersey Supreme Court selected a clear operational rule: police must obtain a warrant supported by probable cause before acquiring cell-phone tracking information, unless an established exception applies.
A warrant application should identify the device or account, connect it to the person or criminal activity under investigation, explain why location information will produce evidence or help locate a properly sought person, define the requested time period and type of location assistance, and disclose material facts bearing on necessity and scope.
Prospective Application
The court concluded that its warrant requirement announced a new rule. Existing New Jersey law had required some judicial process for certain cell-site requests but had not clearly demanded a probable-cause warrant.
Because broad retroactive application could disrupt completed cases and officers could not reasonably have anticipated the new standard, the court applied the rule to Earls himself and prospectively.
Emergency Aid on Remand
The Supreme Court preserved the emergency aid doctrine and returned the case to the Appellate Division to determine whether it justified the warrantless provider requests. On remand in 2014, the appellate court held that it did not.
The record did not establish specific, articulable facts showing an imminent danger requiring immediate action. The long delays were especially important: officers waited hours before contacting the provider, made repeated requests over the evening, and did not confront Earls until hours after the successful trace. Those actions did not demonstrate the urgency necessary to dispense with a warrant.
Earls and Carpenter
Five years later, the United States Supreme Court held in Carpenter v. United States that the government generally conducts a Fourth Amendment search when it obtains at least seven days of historical cell-site location information from a provider.
| Issue | State v. Earls | Carpenter v. United States |
|---|---|---|
| Constitutional source | New Jersey Constitution | Fourth Amendment |
| Data at issue | Provider-assisted location traces used to locate a phone during an evening | Historical CSLI covering at least seven days |
| Rule | Probable-cause warrant generally required for cell-phone tracking information | Warrant generally required for the historical CSLI at issue |
| Third-party doctrine | Provider possession does not automatically defeat privacy under New Jersey law | Narrow federal limitation on traditional third-party doctrine for revealing CSLI |
| Express limits | Recognized warrant exceptions remain available | Did not decide real-time CSLI, tower dumps, or all shorter periods |
Current Operational Rule
For New Jersey investigations, a probable-cause warrant is the default process for obtaining a person's cell-phone location information from a provider. Current New Jersey statutory law also identifies routes involving a warrant, subscriber consent, specified court process for some records, and a good-faith emergency involving danger of death or serious bodily injury for location information.
Constitutional requirements control over any lower statutory threshold. Investigators should not assume that a statute authorizing a form of process necessarily establishes the constitutional minimum for the requested data.
Practical Guidance for Investigators and Agencies
Cell-Phone Location Warrant Checklist
| Application Element | Drafting Question |
|---|---|
| Device and account | What phone number, account, device identifier, or other selector is targeted? |
| Attribution | What facts connect the device to the person, place, offense, or evidence sought? |
| Probable cause | Why will the requested location information probably produce evidence or locate the subject lawfully sought? |
| Data type | Is the request for historical CSLI, prospective updates, GPS coordinates, precision estimates, or related records? |
| Time and frequency | What start, end, duration, and update interval are justified? |
| Provider action | Exactly what must the provider preserve, generate, disclose, or certify? |
| Minimization and termination | When should tracking stop, and how will irrelevant information be handled? |
| Return and authentication | How will data, maps, time zones, accuracy fields, and provider certifications be preserved? |
Emergency Location Requests
- Identify the threatened person and the specific danger of death or serious bodily injury.
- Record the source, time, reliability, and substance of the emergency information.
- Explain why immediate provider disclosure is necessary and why ordinary warrant procedures cannot meet the need.
- Connect the requested device location to the threatened person or emergency response.
- Limit the request to the information and duration necessary to address the emergency.
- Follow provider emergency-disclosure procedures and obtain supervisory or prosecutorial review when feasible.
- Continue pursuing judicial process if the response extends beyond the immediate emergency.
- Preserve a complete timeline, including delays, attempted alternatives, provider responses, and the reason tracking ended.
Litigation and Discovery Checklist
- Identify every constitutional, statutory, and provider authority invoked for the location request.
- Determine whether the data were historical, prospective, real-time, GPS-derived, cell-site based, or a hybrid.
- Preserve all warrant applications, emergency forms, emails, calls, logs, returns, maps, and raw files.
- Establish who requested the data, who approved the request, and what each person knew at the time.
- Reconstruct the complete timeline; delay may affect an emergency-aid claim.
- Analyze attribution, probable cause, particularity, duration, precision, and minimization.
- Determine whether later evidence is a fruit of the location acquisition and whether attenuation, independent source, or inevitable discovery is asserted.
- Check retroactivity, good-faith rules, and the controlling remedy in the jurisdiction.
- Separate federal Fourth Amendment doctrine from broader state constitutional or statutory protections.
- Verify the law current on the date of the request and on the date of litigation.
Frequently Asked Questions
What did State v. Earls hold?
The New Jersey Supreme Court held that individuals have a reasonable expectation of privacy in cell-phone location information under Article I, Paragraph 7 of the New Jersey Constitution and that police generally need a probable-cause warrant to obtain it.
Is Earls a United States Supreme Court case?
No. It is a New Jersey Supreme Court decision based independently on the New Jersey Constitution.
Did police have an arrest warrant?
Yes, but the arrest warrant did not itself authorize the separate acquisition of provider-held cell-phone location information.
Does Earls prohibit emergency location requests?
No. It expressly preserves emergency aid and other recognized warrant exceptions. The government must prove that the exception actually applies.
Why did the emergency argument fail on remand?
The Appellate Division found no specific basis for an imminent threat and concluded that the officers' extended delays were inconsistent with the immediacy required by emergency aid.
How is Earls different from Carpenter?
Earls applied state constitutional law to provider-assisted cell-phone tracking. Carpenter later applied the Fourth Amendment to the acquisition of at least seven days of historical CSLI and expressly left several other technologies unresolved.
Does the ruling apply outside New Jersey?
It is not binding outside New Jersey, but it is influential authority on location privacy. Other jurisdictions must apply their controlling federal and state law.
Primary Authorities and Current Law
New Jersey Supreme Court opinion recognizing a state constitutional privacy interest in cell-phone location information and requiring a probable-cause warrant or valid exception.
Read the New Jersey Supreme Court opinion
Decision on remand holding that emergency aid and other warrant exceptions did not validate the warrantless requests on the case record.
Read the remand decision
United States Supreme Court opinion generally requiring a warrant for the acquisition of at least seven days of historical cell-site location information.
Read Carpenter
Current New Jersey statutory provisions addressing law-enforcement access to electronic communications, provider records, mobile-device location information, preservation, and emergency disclosure.
Review the current statutory text
Final Assessment
State v. Earls is a foundational location-privacy decision because it treated a cell phone as more than a convenient source of provider records. A phone is a persistent locator that can reveal private places, relationships, routines, and associations without the user intentionally creating a tracking record for police.
The case also offers an operationally useful pairing: a clear probable-cause warrant rule and a genuine emergency exception. The remand demonstrates why both parts matter. Public-safety concerns can justify rapid access, but the facts, timeline, and agency conduct must show a real need for immediate assistance.