How can a Georgia criminal defense lawyer challenge GPS tracking evidence?
A GPS challenge has two main parts: whether the government could get the data without a warrant, and whether the data proves what it’s said to prove.
How it was obtained.
| Source | Rule |
|---|---|
| Police tracker on a car | Search, United States v. Jones (2012) |
| Historical cell location | Warrant, Carpenter v. United States (2018) |
| Real-time phone location | Warrant, or an emergency |
| Phone app data from a company | O.C.G.A. § 16-11-66.1 process; warrant |
| Probation ankle monitor | May be a condition of the sentence |
| Vehicle infotainment | Warrant if seized from the car |
| Geofence warrant | Particularity is disputed; courts have split |
The motion goes under § 17-5-30. Georgia’s constitution can give more protection than the federal one. Without a federal-style good faith exception, under Gary v. State (1992), a defective warrant may lead to exclusion in a way it wouldn’t in federal court.
What it proves.
- Accuracy. Margin of error, signal loss, urban blockage.
- Device vs. person. The tracker shows where the device was, not who had it.
- Time. Time zones and logging intervals.
- Maps. Software that plots points can give an impression of precision that it doesn’t have.
Foundation. Section 24-9-901(b)(9) covers evidence describing a process or system. The state may also need an expert under § 24-7-702 if it’s interpreting. A cell tower expert’s coverage maps can be challenged.
A private person’s tracker raises other problems, including § 16-11-62(8) where a protective order is in place.
General information about Georgia law as of November 2026. It is not legal advice and does not create an attorney-client relationship.