If you carry a smartphone — and let’s be honest, who doesn’t — you should know that the Supreme Court just handed down a decision that directly affects how law enforcement can use your location data against you. On June 29, 2026, the Court ruled in Chatrie v. United States that when police obtain your Google Location History through what’s known as a “geofence warrant,” they are conducting a Fourth Amendment search. That might sound like legal jargon, but the practical impact is enormous, and if you’re facing criminal charges — or worried you might be — this is a case worth understanding.

What Is a Geofence Warrant, Anyway?

Picture this: a crime happens at a specific location and time, but investigators don’t have a suspect. Instead of old-fashioned detective work, police increasingly turn to tech companies like Google and ask a simple but sweeping question: which cell phones were near this location when the crime occurred?

To answer that, Google draws on something called Location History — a service that, when enabled, tracks a user’s phone every couple of minutes using GPS, Wi-Fi signals, Bluetooth beacons, and cell towers. It’s precise enough to tell not just where you were, but which floor of a building you were on.

In the case the Supreme Court just decided, a Virginia credit union was robbed in 2019. Police couldn’t identify a suspect, so they asked a magistrate for a warrant compelling Google to hand over data on every phone that came within 150 meters of the bank around the time of the robbery. The warrant authorized a three-step process: first, anonymized data on everyone in the area; second, a wider window of movement for a narrowed-down group of phones; and third, names and identifying information for whichever handful of people the police decided to pursue.

That process eventually led police to a man named Okello Chatrie, whose phone data showed him entering the area minutes before the robbery. He was charged, and he fought back — arguing that this entire process amounted to an unconstitutional search of his private information.

Why the Court Sided With the Individual, Not Just the Investigation

For years, there’s been a real question about whether digital tracking like this even counts as a “search” under the Fourth Amendment. Traditionally, if you handed information over to a third party — like a bank or phone company — courts assumed you gave up your expectation of privacy in that information. This is called the “third-party doctrine,” and it’s been a favorite tool for prosecutors trying to sidestep warrant requirements.

But the Supreme Court has been chipping away at that doctrine as technology has evolved. Back in 2018, in Carpenter v. United States, the Court held that police need a warrant to access historical cell-tower records because that data creates an almost complete picture of a person’s movements over time. The government argued that Location History was different — more precise, sure, but also more optional. After all, you have to affirmatively turn Location History on. You don’t have to do that just to make calls or send texts.

The Court wasn’t persuaded. It reasoned that Location History is, if anything, more revealing than the older cell-tower data at issue in Carpenter. It can pinpoint a phone to within about twenty meters and log its location every couple of minutes, effectively creating a moving diary of someone’s life — where they go, who they see, and what they do, including trips to sensitive places like a doctor’s office, a place of worship, or a private home. The Court also pushed back on the idea that turning on Location History was some kind of meaningful, informed choice. Google, the opinion noted, repeatedly nudges and sometimes outright warns users that their devices “won’t work correctly” without it, all while staying vague about just how much information will be collected and for how long.

Perhaps most importantly for anyone worried about government overreach, the Court rejected the idea that a short time window makes surveillance less invasive. The government had argued that a mere two hours of location data shouldn’t count as a serious privacy intrusion. The Court flatly disagreed, pointing out that even brief snapshots of someone’s movements can reveal deeply personal details — and that the Fourth Amendment doesn’t have some kind of “grace period” before privacy protections kick in. As the Court put it, a search is a search regardless of how much or how little information the government ultimately finds.

What the Ruling Doesn’t Decide

Here’s where things get interesting for anyone following a criminal case closely: the Court didn’t say that this particular geofence warrant was invalid. It only decided the first, threshold question — that gathering this kind of location data is a “search” requiring Fourth Amendment scrutiny in the first place. The second question — whether this specific warrant was properly supported by probable cause and specific enough in what it authorized — was sent back down to the lower appellate court to sort out.

That distinction matters. It means the legal fight over geofence warrants is far from over. Lower courts across the country will now be working through what makes a geofence warrant valid: How narrow does the search area need to be? How much discretion can police have when narrowing down a list of suspects? Does a warrant that lets officers make these calls without going back to a judge violate the particularity requirements the Constitution demands? These are exactly the kinds of arguments that a skilled criminal defense attorney can raise on your behalf if geofence or other digital location evidence played a role in your case.

Why This Matters if You’re Facing Criminal Charges in North Texas

If you’ve been charged with a crime — or you’re worried that you might be — and you know or suspect that law enforcement used cell phone location data, Google account information, or any similar digital evidence to build their case, this ruling gives your defense attorney real ammunition. Evidence obtained through an invalid search can, in many circumstances, be suppressed, meaning the prosecution can’t use it against you. If key evidence gets thrown out, the entire case against you can weaken or collapse.

This is exactly the kind of issue where having an attorney who pays close attention to developments in search-and-seizure law can make a real difference in the outcome of your case. Digital evidence is becoming more central to criminal prosecutions every year — not just geofence data, but cell tower records, app data, smart home devices, and more. Understanding how courts are drawing the line on what police can and can’t access without a warrant isn’t just an academic exercise; it directly shapes what defenses are available to you.

What You Should Do

If you’re under investigation, have been arrested, or have already been charged with a crime where digital location data may have played any role, don’t wait to get legal advice. The earlier a defense attorney gets involved, the more opportunities there are to challenge how evidence was gathered — before it becomes a fixed part of the prosecution’s case against you.

At Tidwell Law Firm, we stay current on developments like this one because they directly affect the strategies available to our clients. Whether your case involves geofence data, cell phone records, or any other form of digital surveillance, we know how to evaluate whether law enforcement followed the Constitution in building their case — and how to push back when they didn’t.

If you have questions about a criminal case involving digital evidence, or you simply want to understand your rights, give us a call at 972-234-8208. We serve clients throughout Collin County and North Texas, including Denton, Hunt, Rockwall, Dallas, and Kaufman Counties, and we’re ready to talk through your situation.