Looking for the best GPS tracker for private investigators in 2025? Family1st is the best overall choice based on our expert testing team because it offers ultra-small size, accurate real-time tracking, and long-lasting battery performance.
Private investigators need trackers that remain discreet while delivering reliable data. This list features the 9 most powerful GPS trackers you can buy for surveillance, vehicle tracking, and personal monitoring.
You will also learn which key features matter most for investigative work. These include real-time location updates, magnetic mounting, and easy-to-hide designs that meet professional needs.
Our Top Picks: GPS Trackers For Private Investigators
Family1st |
Invoxia |
Optimus 2.0 |
LandAirSea 54 |
Tracki |
Americaloc |
Amcrest |
Spark Nano 7 |
Geozilla |
|
|---|---|---|---|---|---|---|---|---|---|
| Ratings | ⭐️⭐️⭐️⭐️⭐️ | ⭐️⭐️⭐️⭐️ | ⭐️⭐️⭐️⭐️ | ⭐️⭐️⭐️⭐️ | ⭐️⭐️⭐️⭐️ | ⭐️⭐️⭐️⭐️ | ⭐️⭐️⭐️⭐️ | ⭐️⭐️⭐️⭐️ | ⭐️⭐️⭐️ |
| Best For | Best Overall | Vehicle Tracking | Real-Time GPS Tracker | Waterproof GPS Tracker | Small GPS Tracker | No Subscription Tracker | Magnetic GPS Tracker | Hidden GPS Tracker | Global GPS Tracker |
| Cost | $29.95 | $99.00 | $14.95 | $14.95 | $18.88 | $65.98 | $29.99 | $12.99 | $19.00 |
| Product Highlight | Compact, reliable tracking, long battery life | Up to 3 months battery, ideal for passive tracking | Adjustable update intervals, fast real-time data | Rugged magnetic case, weatherproof, long battery | Tiny size, global SIM, flexible placement | Pay-as-you-go, tamper alerts, simple tracking | Rugged magnetic case, strong alerts | Small, good concealment, magnetic case included | Lightweight, global SIM, SOS & alerts |
| JUMP TO PRODUCT | JUMP TO PRODUCT | JUMP TO PRODUCT | JUMP TO PRODUCT | JUMP TO PRODUCT | JUMP TO PRODUCT | JUMP TO PRODUCT | JUMP TO PRODUCT | JUMP TO PRODUCT |
How We Tested These Devices?
Trackers were selected based on how well they fit typical private investigator needs such as discreet placement, accurate tracking, and durability. Each device was tested during mock surveillance tasks like following a vehicle and monitoring a subject’s movements.
For live tracking, we focused on how quickly and reliably each device updated its location during real-time operations. Battery performance was observed during long surveillance shifts where constant uptime is critical.
Ease of use was also important for PIs who need to deploy devices quickly without drawing attention. Models that offered fast setup, strong magnetic mounts, and app controls suited for field work ranked the highest.
What Are The Best GPS Trackers for Private Investigators In 2025?
Family1st Portable GPS Tracker - Best Overall
We tested the Family1st Portable GPS Tracker during multiple surveillance scenarios. Its small size and lightweight build made it easy to hide in a vehicle’s glove box or slip inside a subject’s backpack without detection.
Real-time tracking was reliable throughout, with location updates consistently accurate even in dense urban areas. The 14-day battery life proved valuable for extended investigations where device retrieval is not always possible.
One drawback is that the device lacks built-in magnetic mounting, which means extra effort is needed to secure it underneath a vehicle. Still, for private investigators needing a discreet and affordable option, this remains one of the best overall picks for 2025.
Family1st Portable GPS tracker offers an ideal mix of compact size, long battery life, and accurate real-time tracking. It works well for both discreet vehicle placement and portable personal tracking during diverse PI operations.
- Affordable price and low subscription cost
- Compact and discreet design
- Magnetic case for easy attachment to vehicles or metal surfaces
- No activation or deactivation fees
- Limited to basic tracking features
| Feature | Details |
|---|---|
| Device Cost | $29.95 |
| Subscription Plan | $19.95 |
| Warranty | Lifetime Warranty |
| Magnetic Case | Yes |
Battery & Specs
| Specification | Details |
|---|---|
| Size | 2.8” x 1.8” x 1.1” |
| Weight | 3.60 Oz |
| Battery | 2400 mAh Li-Polymer |
| Battery Type | Internal and Rechargeable |
| Active Battery Life | Up to 2 weeks |
Invoxia - Best Vehicle Tracking For PIs
Invoxia’s GPS Tracker PRO stands out for long-term vehicle tracking, making it a practical choice for PIs monitoring targets over weeks rather than days. Its slim design allowed easy placement under vehicle seats and in cargo areas without requiring frequent retrieval.
Battery life was a clear strength, holding a charge for several weeks, which reduced the need for constant maintenance during extended surveillance. The app’s entry and exit zone alerts also proved helpful when tracking subjects with irregular movement patterns.
However, its partial reliance on Bluetooth for initial setup raised concerns for situations where the tracker must remain fully autonomous, such as tracking stolen assets or when physical proximity isn’t possible. Even so, for passive vehicle tracking and discreet long-term monitoring, Invoxia delivers impressive performance that suits many investigative needs.
With extended battery life and passive tracking capabilities, this device is well-suited for long-term vehicle surveillance. It’s a practical choice when the investigator needs to monitor a subject over several weeks.
- Discreet size for easy concealment
- Advanced geofencing and alert customization
- Long battery life of up to 2-3 weeks
- One-time purchase with no ongoing fees
- Wide global coverage
- Higher initial investment
- Basic feature set compared to some higher-end models
| Feature | Details |
|---|---|
| Device Cost | $99 |
| Subscription Plan | $7.99 |
| Coverage Area | Over 190 countries |
| Custom Alerts | Yes, with virtual fencing |
| Size | Small and lightweight |
Battery & Specs
| Specification | Details |
|---|---|
| Size | 1.75″ x 1.6″ x 0.6″ |
| Weight | 1.26 Oz |
| Battery | 3500 mAh |
| Battery Type | Internal and Rechargeable |
| Active Battery Life | 2-3 weeks with 1-5 minute updates |
| Sleep Mode Battery Life | Up to 3 months with one update per day |
Optimus 2.0 - Best Real-Time GPS Tracker For Private Investigators
Optimus 2.0 brings excellent flexibility for real-time tracking, which is especially useful for active surveillance cases where immediate updates are critical. The small size allows for quick placement under seats or within a vehicle’s interior, and the app made it easy to monitor subjects in motion.
Setup was straightforward, and the ability to adjust reporting intervals proved valuable when balancing between detailed tracking and battery conservation. Alerts for movement, speeding, and geofence breaches were timely, giving investigators good situational awareness during tailing operations.
Battery life was somewhat disappointing in colder conditions, dropping to around four days on a full charge despite a one-minute update interval. Investigators relying on longer deployments should plan for more frequent charging or consider pairing it with an external battery for extended use.
The customizable update intervals give investigators greater control over live tracking. It performs especially well during dynamic fieldwork where following a moving target requires precise timing.
- Real-time tracking with 4G connectivity
- Stores unlimited location history
- Long battery life of up to 2 weeks
- Cost-effective with low subscription fees
- Durable for multiple uses
- Limited advanced features compared to higher-end models
| Feature | Details |
|---|---|
| Device Cost | $39.95 |
| Subscription Plan | $19.95 per month |
| Data Storage | Unlimited historical data |
| Size | Compact and lightweight |
| Battery Life | Up to 2 weeks with active updates |
Battery & Specs
| Specification | Details |
|---|---|
| Size | 3″ x 1.5″ x 1″ |
| Weight | 3.3 Oz |
| Battery | Lithium Polymer |
| Battery Type | Internal and Rechargeable |
| Active Battery Life | 2 weeks with 1-minute updates |
LandAirSea 54 - Best Waterproof GPS Tracker For PIs
LandAirSea 54 is a solid choice for private investigators needing a tracker that can handle rough weather and outdoor placements. Its fully waterproof, magnetic design makes it easy to attach underneath vehicles or on outdoor equipment without worrying about rain or dirt.
The device’s motion-activated battery management worked well when we were testing, helping extend battery life in cases where a subject's vehicle remained parked for long periods. Setup with the SilverCloud app was intuitive, and the ability to access tracking history was helpful for reviewing subject movement patterns.
There were occasional delays in real-time updates, which could be frustrating during fast-moving surveillance where every second counts. Despite this, for operations that require durable, long-lasting placement outdoors or under vehicles, the LandAirSea 54 remains a valuable tool in a PI’s tracking kit.
Its rugged, waterproof construction makes it reliable for exterior vehicle placement. Investigators can confidently deploy it in outdoor conditions without worrying about environmental damage.
- Waterproof and dustproof for use in all weather conditions
- Compact size for easy concealment
- Durable magnetic mount for quick installation
- Long battery life with 3 weeks of active use
- Easy-to-use interface with customizable alerts
- Larger size compared to some mini trackers
- Heavier weight might be noticeable in certain concealment situations
| Feature | Details |
|---|---|
| Device Cost | $29.99 |
| Subscription Plan | $19.99 per month |
| Waterproof and Dustproof | Yes |
| Size | Compact and easy to hide |
| Magnetic Mount | Yes, included |
Battery & Specs
| Specification | Details |
|---|---|
| Size | 2.25″ x 2.25″ x 0.8″ |
| Weight | 8 Oz |
| Battery | Lithium-ion |
| Battery Type | Internal and Rechargeable |
| Active Battery Life | 3 weeks with 3-minute updates |
| Battery Life in Sleep Mode | 6 months |
Tracki - Best Small GPS Tracker For Private Investigators
Tracki’s compact size makes it easy to conceal during surveillance work. The device fits smoothly into backpacks, glove compartments, or under car seats without drawing attention.
During field use, real-time location updates were fast and the ability to adjust tracking intervals on the app proved helpful when following a moving target. Battery performance can be extended with an optional case, which is useful on lengthy assignments where daily access to the tracker isn’t possible.
One issue came up with geofence alerts, which didn’t trigger consistently across all test zones. Even with that limitation, the device remains a practical choice for private investigators who prioritize portability and worldwide tracking capabilities.
This device’s ultra-small size allows it to be hidden in locations that larger trackers can’t reach. It’s a strong option for cases that involve tracking personal belongings or when high concealment is required.
- Compact and lightweight for easy concealment
- Global coverage with an international SIM card
- Lifetime warranty and long-term historical data storage
- User-friendly interface with real-time tracking
- Shorter battery life of 5 days with frequent updates
- Battery life may be reduced with continuous high-frequency updates
| Feature | Details |
|---|---|
| Device Cost | $18.88 |
| Subscription Plan | $9.95 per month |
| International Coverage | Yes, over 190 countries |
| Lifetime Warranty | Yes |
| Historical Data Storage | Up to 5 years |
Battery & Specs
| Specification | Details |
|---|---|
| Size | 1.74” x 1.5” x 0.6” |
| Weight | 1.26 Oz |
| Battery | 3500 mAh Li-Polymer |
| Battery Type | Internal and Rechargeable |
| Active Battery Life | 5 days with 1-5 minute updates |
Americaloc GL300W - Best No Subscription Tracker For PI
Americaloc GL300W offers a flexible pay-as-you-go model, which works well for private investigators handling occasional cases or short-term assignments. The included magnet made installation on vehicles quick, with no extra accessories needed.
The tracker performed well for basic location tracking and movement alerts, and having the first three months of service included gives PIs a chance to test the device without upfront subscription costs. Notifications for tampering and zone entry were reliable during multiple vehicle tracking scenarios.
For cases requiring pinpoint accuracy, especially in dense urban environments, this device showed some minor location drift. Still, for private investigators seeking an affordable, contract-free solution for straightforward tracking tasks, the GL300W offers strong value.
The pay-as-you-go model fits well with investigators who only need tracking services occasionally. It provides solid performance without committing to long-term subscription costs.
- Compact and discreet for easy placement
- Long battery life of up to 14 days
- Flexible installation options, including wired setup
- Global coverage in over 180 countries
- No contract or additional fees for activation/cancellation
- Larger size compared to some ultra-compact trackers
- May require additional accessories for optimal discreet use
| Feature | Details |
|---|---|
| Device Cost | $59.88 |
| Subscription Plan | $19.99 per month |
| Global Coverage | Over 180 countries |
| Historical Data Storage | Up to 1 year |
| Flexible Installation | Portable or wired under dashboard |
| Real-time Alerts | Yes |
Battery & Specs
| Specification | Details |
|---|---|
| Size | 7” x 1.51” x 0.92” |
| Weight | 24 Oz |
| Battery | Lithium-ion battery |
| Battery Type | Internal and Rechargeable |
| Active Battery Life | 10-14 days with one-minute updates |
Amcrest - Best Magnetic GPS Tracker For Private Investigators
Amcrest’s GPS GL300 comes ready with a magnetic weatherproof case, making it a strong choice for investigators needing to attach a tracker quickly to vehicles. The sturdy build handled both wet and dusty environments during field use, offering flexibility for outdoor surveillance.
Tracking performance was reliable with frequent update options, and the web and mobile interfaces provided useful tools for monitoring movement in real time. Alerts for geofencing, speeding, and harsh braking worked well, helping track driver behavior during vehicle surveillance cases.
Initial setup through the app took longer than expected, which could cause delays if a tracker needs to be deployed on short notice. Once configured, though, this device delivered solid performance, particularly for PIs focused on vehicle-based tracking assignments.
Included magnetic and weatherproof casing allows for fast, secure placement on vehicles. It’s a reliable solution for field investigators who need equipment that’s quick to deploy and built to last.
- Compact size for discreet placement
- Nationwide coverage with 4G LTE network
- Customizable update frequency (5-60 seconds)
- Travel history available for up to one year
- Optional magnetic-waterproof casing for added protection
- Shorter battery life compared to some competitors
- May require additional accessories for optimal placement
| Feature | Details |
|---|---|
| Device Cost | $29.99 |
| Subscription Plan | $19.99 per month |
| Coverage | Nationwide (4G LTE) |
| Update Frequency | 5-60 seconds |
| Travel History | Up to 1 year |
| Geofence Support | Up to 20 |
Battery & Specs
| Specification | Details |
|---|---|
| Size | 3” x 1.5” x 1” |
| Weight | 3.52 Oz |
| Battery | Li-Polymer, 2600 mAh |
| Battery Type | Internal and Rechargeable |
| Active Battery Life | 10-12 days with 1-minute updates |
| Sleep Mode Battery Life | Up to 2 weeks (no activity) |
Spark Nano 7 - Best Hidden GPS Tracker For Private Investigators
Spark Nano 7 is built with concealment in mind, which makes it a useful option for private investigators handling vehicle tracking cases where discretion is key. The compact size combined with a waterproof magnetic case allowed us to place the device securely under vehicles without raising suspicion.
Real-time tracking tools and historical reporting were easy to access through the mobile app and web platform, offering flexibility for monitoring movements both in the field and from an office. The ability to adjust settings remotely proved helpful for adapting to changing surveillance needs.
During testing, tracking accuracy occasionally dropped, with inconsistent updates in some areas. For straightforward cases where placement and concealment take priority, the Spark Nano 7 remains a practical option, though it may require closer monitoring to ensure consistent tracking results.
Designed for stealth, this tracker excels in hidden placements where visibility must be minimized. It suits assignments where long-term, undetected monitoring of a vehicle is essential.
- Real-time tracking with 60-second updates
- Rapid mode for faster tracking speed
- Compact and portable design
- Full 4G coverage across North America
- Includes geofence alerts and panic button
- Higher initial cost compared to some competitors
- Limited battery life with frequent updates
| Feature | Details |
|---|---|
| Device Cost | $16.97 |
| Subscription Plan | $29.99 per month |
| Coverage | North America (4G LTE) |
| Update Frequency | 60 seconds (rapid mode available) |
| Geofence Alerts | Yes |
| Panic Button | Yes |
Battery & Specs
| Specification | Details |
|---|---|
| Size | 3.0” x 1.58” x 1.0” |
| Weight | 3.3 Oz |
| Battery | 2600mAh |
| Battery Type | Rechargeable Lithium-Ion |
| Active Battery Life | 6 days with 1-minute tracking updates |
| Sleep Mode Battery Life | 15 days (no activity) |
Geozilla - Best Global GPS Tracker For PI
Geozilla’s small form factor and global coverage make it appealing for private investigators working international or cross-border cases. The lightweight design allowed discreet placement in backpacks and personal items, which suits non-vehicle-based surveillance.
Custom alerts and the SOS button were simple to set up, and the app interface made it easy to monitor subject movements across different zones. Its ability to connect through cellular, Wi-Fi, and GPS offered decent flexibility when tracking in mixed environments.
That said, while testing, GPS localization was not consistently precise, especially indoors or in densely built areas. While it can serve well for broad global tracking needs, investigators requiring highly accurate real-time location data may need to supplement it with a more dedicated GPS device.
Its global SIM and Wi-Fi backup make it a good fit for international tracking or subjects who frequently cross borders. It’s useful when tracking needs extend beyond local or national boundaries.
- Compact and lightweight design
- Long battery life with up to 15 days in battery-saving mode
- Global coverage for international tracking
- Easy to attach with various magnetic attachments
- Limited battery life with frequent updates (2-3 days for 1-minute updates)
- May require additional setup time for international tracking
| Feature | Details |
|---|---|
| Device Cost | $19 |
| Subscription Plan | $19 per month |
| Coverage | Global (GSM and GPS) |
| SOS Button | Yes |
| Best For | Elderly, Kids, and Pets |
Battery & Specs
| Specification | Details |
|---|---|
| Size | 8″ x 1.6″ x 1″ |
| Weight | 1.05 Oz |
| Battery | 520mAh Li-ion |
| Battery Type | Internal and Rechargeable |
| Active Battery Life | 2-3 days with 1-minute updates |
| Sleep Mode Battery Life | 6 days (no activity) |
Things to Consider Before Choosing GPS Trackers For Private Investigators
There are different types of GPS devices in the market. But not every one of them is for you. Before choosing anyone, you should consider these factors.
Portable or Hardwired?
There are two kinds of GPS trackers: portable and hardwired. Portable GPS trackers are best for hidden tracking for private investigators because they’re easy to attach and remove when the job is done. Hardwired GPS trackers require an expert to install and remove, and they can’t be used on things like bags or suitcases.
Product Dimensions
Using a small, lightweight GPS tracker is essential if you're a private investigator and need to track someone without being noticed. There are many options which are tiny enough to fit in your hand, making them easy to hide for discreet tracking.
Battery Life
Can you know exactly how long a case will last? Probably not. Imagine you're so close to getting crucial evidence, and the GPS tracker stops sending updates because its battery died. That would be frustrating. To avoid this, private investigators should choose a GPS tracker with a strong battery life to ensure it works throughout the case.
Installation Process
You will have a fraction of a second to install a GPS tracker on your target's vehicle or belongings. A GPS tracker with a lengthy installation process can ruin your time, and you will never be able to put it on their car. Therefore, you should purchase a GPS tracker with a simple installation process.
For this reason, you should choose a GPS tracker with a built-in magnet or magnetic case. This allows you to attach it under the car in just a few minutes, making installation quick and easy.
Real-time Updates
As a private investigator, you want to stay updated with your target's location 24/7. And for this, you have to look for a GPS tracker with real-time location updates. It will help you monitor your target in real-time, and you won't miss a second of their location.
Coverage
Another significant factor is coverage. As a detective, you should look for a GPS device with worldwide coverage. Why? As it will help you to stay updated about your target's location. No matter where they go or in which country.
Connectivity
The GPS device accumulates the data and uploads it to the cloud storage through which the user can access the location. The whole process is a time-consuming one. With slower networks such as 2G or 3G, location updates get delayed. As a private investigator, you should always look for a GPS tracker with better connectivity.
Mapping
You should also consider the mapping feature of the GPS solution. An ideal solution will help you to view the location from different views.
Private Investigators: Need for A GPS Tracker
Private investigators have been around since the 1800s. For decades, people have been hiring them for commercial divorce cases. Their job duties involve surveillance, documentation, research, investigations, interviews, and many other things.
Often their work requires them to follow the target, collect evidence, and pull nightovers. Practically, following someone is impossible. There will be times when you can miss that person. Even a fraction of a second is enough to create a gap between you and your case. And in such a case, nothing can be better than GPS trackers for private investigators.
It can help you to follow someone without exposing yourself physically. You can keep tabs and work on other things simultaneously. For this, you have to purchase a GPS tracker and attach it to your target's vehicle or any other belonging.
And you will start getting location updates in real-time. With better GPS solutions, you may also get other features such as geofencing, one-minute updates, worldwide coverage, etc.
Are Private Investigators Allowed To Use GPS Trackers?
Now you may start wondering if you can attach GPS trackers discreetly to someone's vehicle. In the US, there is no clear law that makes this illegal. But in 2012, the Supreme Court made it clear that no government authority can install a GPS tracker without a warrant.
Laws about GPS trackers vary from one state to another. But we can say that if you have a license, you can put a GPS tracker on anyone's vehicle. But for it, you need to have a good motive for doing so. Because if your client has bad intentions, you will have to face serious situations.
For example, suppose your client is a jealous ex-husband who wants to pry on his ex-wife's private life. In this situation, he can even harm her. And therefore, you should avoid such cases.
Frequently Asked Questions
Who uses GPS trackers?
GPS trackers are used by a variety of individuals and organizations, including private investigators, law enforcement agencies, businesses, and individuals who want to track their vehicles or assets.
What are the benefits of using a GPS tracker for private investigators?
GPS trackers provide private investigators with real-time location data, enabling them to track the movements of a person or object, gather evidence, and make informed decisions based on the information collected.
What factors should I consider when choosing a GPS tracker for private investigation?
Some important factors to consider when choosing a GPS tracker for private investigation include accuracy and precision, battery life, ease of use, data storage and retrieval, and real-time tracking capabilities.
Are GPS trackers legal for private investigators to use?
Yes, GPS trackers are legal for private investigators to use, but there are certain restrictions on their use, depending on the jurisdiction. It is important to check with local laws and regulations before using a GPS tracker for private investigation.
Can GPS trackers be detected by the person being tracked?
It is possible for GPS trackers to be detected by the person being tracked, particularly if they have knowledge of GPS technology and are actively looking for it. However, many modern GPS trackers are designed to be small and discreet, making them difficult to detect.
Conclusion
Selecting the best GPS tracker for private investigators depends on what type of tracking you need. Family1st is a great all-round option for both vehicle and personal tracking with solid battery life.
If you need something more specialized, there are excellent choices. LandAirSea 54 is ideal for rugged outdoor use, while Tracki works well for highly discreet, portable tracking.
No matter which option you pick, all of the trackers listed here can help private investigators monitor their subjects effectively. Just choose the one that matches your case needs and budget, and you’ll be ready to track with confidence.
