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Can I track my partner's car If I suspect they're cheating?

When you start wondering why your partner goes to the gym much earlier than usual, or why their "quick errand" to the mall takes hours, the temptation to play private detective can be pretty tempting. We look at the legal implications of sticking a tracker on your better half's car if you think they're being unfaithful.

Car Ownership5 min read

In the age of advanced technology, that tiny GPS tracker seems like such a simple solution; small enough to hide, powerful enough to answer those burning questions that keep you tossing and turning. But before you click "add to cart", South Africa's privacy laws have some severe warnings you can't afford to ignore.

Let's find out what happens when relationship detective work collides with POPIA, and why that tracker might cost you dearly.

Can you hide a tracker in their car?

Of course, it's possible. The market is flooded with GPS trackers as small as a USB stick that could be discreetly tucked under a bumper or in a wheel well of their SUV. But should you? That would depend on the circumstances.


Images of trackers on Takealot.

You can take your pick of trackers, but can you legally use them to spy on people?


Several legitimate tracking companies, like Netstar and Tracker, operate in South Africa and offer comprehensive vehicle tracking solutions. Discovery's Vitality Drive program also uses telematics to monitor driving behaviour and reward safe driving with benefits like fuel cashbacks and weekly rewards in Discovery Miles. These services are entirely legal when used with consent. They're designed for vehicle recovery after theft, fleet management, and insurance purposes.

Related: Can installing a car tracker lower my insurance cost? 


What if you hid a tracker on their car without their knowledge?

Under POPIA, personal information (including location data) can only be collected with the individual's knowledge and consent. Installing a hidden tracker on someone's car without their knowledge or consent violates these principles faster than a deleted WhatsApp voice note.


A little red toy car on a map.

But POPIA violations are just an hors d'oeuvres in a banquet of legal of consequences. Your unauthorised tracking expedition could also qualify as harassment or stalking under the Protection from Harassment Act 17 of 2011. This act allows victims to apply for a protection order against harassment, which includes following or monitoring someone without their consent.


Woman looking at Google Maps on her phone.
In our next episode of Cheaters...


Legal implications: When your detective work becomes a crime

If caught playing amateur detective with an unauthorised tracker, you're looking at some unpleasant repercussions.

  1. Under POPIA (Protection of Personal Information Act):

    • Maximum fine of up to R10 million!
    • Imprisonment for up to 10 years!
    • Or both fine and imprisonment.

The Information Regulator determines administrative fines based on the nature of the personal information involved and the extent of the violation.

  1. Under the Protection from Harassment Act 17 of 2011:

    • Installing a tracker without consent could be considered harassment or stalking,
    • The affected person can apply for a protection order,
    • Violating a protection order is a criminal offence.
    • Penalties for violating a protection order include hefty fines and 5 years imprisonment.


Let that sink in for a moment. While tracking your partner's suspected shenanigans, you could be crafting your one-way ticket to legal troubles that make a cheating scandal look like a walk in the park. A criminal record is not very sexy, and being someone's girlfriend in jail isn't the relationship upgrade you're looking for. 


Couple arguing.

Someone's got some explaining to do!


What about smartphone surveillance?

It won't be easy to download while it's surgically attached to their hand, tucked under their pillow at night, and password-protected with letters in the Cyrillic alphabet. But more importantly, installing spyware on someone's phone without consent isn't just morally questionable—it's also illegal under South Africa's POPIA Act.

What to do instead? Ask your other half to download a tracking app on their phone voluntarily, "for their own safety," in case they get hijacked or lose their phone. If they have nothing to hide, they'll probably agree, although some people, however honest, don't like the idea of being monitored. As a mom of two teenagers with Life360 installed, I know this: They monitor me when I'm at Checkers and phone me to bring snacks.

Related: Hijacking still a major problem in SA according to Tracker

Remember that people who cheat may have a separate "burner" phone, which may travel to different destinations!


Lady looking at her partner's laptop.
Hmm, what's going on here?


Alternative routes on the road to truth

Before you dive headfirst into the murky waters of surveillance, consider these less legally perilous alternatives:

  1. Direct communication. This is a revolutionary concept, but it works. Sometimes, asking direct questions while looking for non-verbal cues can reveal more than any GPS tracker.  Is your partner touching their nose or licking their lips when you ask them about it? (It doesn't count when they have hay fever.)

  2. Couples counselling. A professional mediator can create a safe space for truths to emerge without needing Scooby-Doo and the Mystery Incorporated team. However, honesty and commitment from both parties are required.

  3. Check public social media. They might be careless enough to leave digital breadcrumbs that don't require the KGB's top hackers. Are they constantly clearing their Google search history or using private browsers, or in "incognito" mode? We're not saying they're cheating, maybe they're just visiting untasteful websites, or shopping secretly at Temu.

  4. Trust your instincts. Sometimes, the most sophisticated detection system is your own intuition. If something feels off in your gut, it often is. If they go to sleep in another room, it could be your snoring, though.


So, not worth it, then?

The harsh reality is that if you've reached the point of considering tracking devices, the trust in your relationship has already been compromised more thoroughly than a terrorist organisation's database. No GPS coordinates are going to repair that foundation.

Instead of risking fines, criminal charges, and potentially jail time, perhaps the energy would be better invested in making peace because it might be time to recalculate your route to happiness without them in the passenger seat.

Author - Ané Albertse

Written by Ané Albertse

Ané was bitten by the motoring bug at a very young age. Her mom recalls her sitting in her stroller as a 3-year old, naming every car that came past. She was creating content for various publications within Media24 when AutoTrader nabbed her for good, and is one of the longest-standing members of the AutoTrader team. She prefers dirt roads to tar and SUVs/bakkies to sports cars, but her greatest passion is helping people find the perfect car for their budget, lifestyle, and personality.Read more

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