Putting an AirTag on someone’s car is illegal in most situations. If you don’t own the vehicle and the owner hasn’t consented, you’re likely violating state law — either a statute written specifically for electronic tracking devices or a broader stalking, harassment, or privacy law that covers secret location monitoring. Federal stalking law can also apply because AirTags communicate through Apple’s nationwide Find My network. The person you tracked can also sue you in civil court.
State Laws Make Unauthorized Tracking a Crime
No single federal rule governs vehicle tracking by private citizens. Instead, each state handles it, and the rules fall into two camps. At least nine states have laws aimed directly at electronic tracking devices, making it a standalone crime to install one on a vehicle you don’t own without the owner’s consent. The rest of the states reach the same outcome through stalking, harassment, or electronic surveillance statutes that treat hidden location monitoring as criminal conduct.
These statutes define “tracking device” broadly. The definition typically covers Bluetooth trackers like AirTags, dedicated GPS units, and smartphone apps that report location. Several states go further and prohibit using any electronic method to determine a person’s location without consent, not just tracking a vehicle.
Consent is the thread that runs through every version of the law. If the vehicle’s owner didn’t agree to the tracker being there, the person who placed it is almost certainly breaking the law somewhere.
Federal Stalking Law Can Also Apply
The federal stalking statute makes it a crime to use “any interactive computer service or electronic communication service or electronic communication system of interstate commerce” to engage in conduct that causes a reasonable person to fear serious harm or suffer substantial emotional distress. An AirTag communicates through Apple’s Find My network, which routes data through servers across the country. That connection to interstate communication infrastructure is enough to give federal prosecutors jurisdiction once the tracking crosses into stalking or intimidation.
Federal stalking penalties are set out in 18 U.S.C. § 2261 and can include significant prison time depending on the harm. Most unauthorized tracking cases are still prosecuted at the state level, but the federal option exists and has been used in domestic violence cases and against repeat offenders who cross state lines.
When It’s Legal to Track a Vehicle
Ownership is the dividing line. If you own the vehicle outright, you can put a tracker on it. People do this for theft recovery, monitoring a teen driver, or keeping tabs on a fleet vehicle. A parent who owns the car their minor child drives can generally track it, because the law recognizes both the property right and the parental role.
Employers can track company-owned vehicles their employees drive. A growing number of states require employers to notify workers in writing before activating a tracking system, even on company property. The safer practice is to include tracking disclosures in employment agreements and get a signed acknowledgment. Tracking an employee’s personally owned vehicle is a different matter — that requires the employee’s explicit consent and is treated like tracking anyone else’s car.
Auto lenders sometimes install GPS units on financed vehicles, especially in subprime lending. That’s legal when the borrower signs a disclosure and consent form as part of the financing paperwork. Several states regulate these devices separately and require minimum notice before a lender can remotely disable a vehicle for missed payments.
Shared Vehicles, Spouses, and Divorce
Co-owned vehicles sit in a genuinely murky zone. If both spouses are on the title, some courts have found that either co-owner can place a tracker because they have a property interest in the car. Other courts have held that tracking a co-owner still violates privacy expectations, especially once the relationship has deteriorated.
Once a divorce has been filed or a legal separation is underway, the calculus shifts. Judges tend to view secret tracking during active litigation as controlling or harassing behavior rather than a legitimate use of property rights. Even where co-ownership provides a technical defense to a criminal charge, evidence from a hidden tracker is often ruled inadmissible in divorce proceedings. The tracking can also backfire in custody disputes, where a judge may read it as obsessive or intimidating behavior. Co-ownership is not a reliable legal shield once the relationship has become adversarial.
Criminal Penalties
In states that treat unauthorized tracking as a standalone offense, the charge is typically a misdemeanor. Penalties commonly include fines and up to a year in jail. Some states escalate the offense to a felony in certain circumstances — when the person being tracked is protected by a restraining order, for example, or when the tracker was used to facilitate another crime. Felony penalties can reach several years in prison and substantially higher fines.
The more serious charges usually come from stalking statutes rather than tracking-specific laws. Stalking generally requires a pattern of conduct that would cause a reasonable person to feel fear or substantial emotional distress. Secretly monitoring someone’s location over days or weeks through a hidden device fits that definition comfortably. If the tracking violates an existing protective order, that violation is typically charged separately and can convert what would otherwise be a misdemeanor into a felony. Courts take protective order violations seriously because the person has already been told to stay away and chose not to.
You Can Also Be Sued
Criminal charges aren’t the only risk. The person you tracked can file a civil lawsuit for money damages. The most common claims are invasion of privacy and intentional infliction of emotional distress. Invasion of privacy covers intrusions into someone’s private affairs that a reasonable person would find highly offensive, and planting a hidden tracker on someone’s car clears that bar in most courts.
A successful plaintiff can recover compensation for the harm caused, including therapy costs, lost wages from the stress of being surveilled, and general damages for emotional suffering. Courts can also award punitive damages for especially egregious behavior. Someone who tracks a former partner despite a restraining order is a strong candidate for punitive damages. The civil case proceeds independently of any criminal prosecution, so both can happen at the same time.
If You Find an AirTag on Your Car
If you discover an unknown tracker on your vehicle, don’t throw it away or smash it. The device is evidence. Take clear photographs and video showing exactly where it was attached before you move it, and note the date, time, and location of the discovery.
You can identify an AirTag by holding any NFC-capable smartphone near the white side of the device. A notification will appear with the AirTag’s serial number and the last four digits of the phone number registered to it. Take a screenshot of that information. To disable the AirTag, press down on the stainless steel back cover and twist counterclockwise to remove the battery. Do this only after you’ve documented everything and are somewhere safe.
Take the device and your documentation to your local police department and file a report. Law enforcement can work with Apple to trace the serial number to the registered Apple ID, which can identify who placed it. If you feel you’re in immediate danger, call 911 rather than driving to the station with the tracker still active on your car.