When you suspect a partner is cheating, the urge to know the truth can be overwhelming, and a GPS tracker or a phone-tracking app can look like a quick way to get answers. Before you buy one, it is worth understanding what Singapore law actually allows, because the wrong move can turn you from a worried spouse into someone facing a civil claim or even a criminal charge.
This guide explains when tracking a spouse’s car is lawful, why tracking their phone is riskier, whether any evidence you gather can be used, and the safer, lawful way to get the clarity you need.
Quick answer: In Singapore, placing a GPS tracker on a car you own or co-own is generally allowed. Tracking a vehicle that is solely your spouse’s, or installing spyware on their phone without consent, can breach the law. The safest route is a licensed private investigator.
The Short Answer: It Depends on Ownership and Consent
There is no single law titled “tracking your spouse”, so the answer turns on two things: who owns the item you are tracking, and whether you have consent. Track something you own and you are usually on safe ground. Track something that belongs solely to your spouse, without their knowledge, and you move into legally risky territory.
Because every situation is different, treat the points below as general guidance rather than a green light, and speak to a family lawyer before you act.
Putting a GPS Tracker on Your Spouse’s Car
A car GPS tracker is the most common tool people reach for, and its legality hinges on ownership. If the vehicle is registered in your name or jointly owned, you generally have the right to place a tracking device on your own property.
- If you own or co-own the car: Placing a GPS tracker on a vehicle you have a legal interest in is generally permissible, since it is your property.
- If the car is solely your spouse’s: Fitting a hidden tracker without consent can expose you to a civil claim for breach of privacy, and interfering with their vehicle carries its own risks.
Singapore’s Personal Data Protection Act generally does not apply to an individual acting in a personal or domestic capacity, which is why this is not primarily a data-protection question between spouses. That exemption, however, does not make covert surveillance lawful. Other laws still apply, and the ownership question remains the deciding factor.
Tracking Your Spouse’s Phone Is a Different Matter
Phones are far more sensitive than cars, and this is where good intentions most often cross a legal line. Installing a spyware or monitoring app on your spouse’s phone, or logging into their accounts without permission, can amount to unauthorised access under the Computer Misuse Act.
Under that Act, knowingly securing access to data on a device without authority is a criminal offence. For a first offence, a person can face a fine of up to $5,000, imprisonment of up to two years, or both. Even if your spouse pays for the phone or you share a plan, they can argue the access was without their consent, so a phone tracker app is a genuine legal risk, not a grey area to gamble on.
What About AirTags and Hidden Trackers?
Small consumer trackers such as an Apple AirTag are marketed for luggage and keys, not people. Slipping one into a spouse’s bag or car to monitor their movements is a form of covert tracking, and following or surveilling a person without their knowledge can amount to unlawful stalking under the Protection from Harassment Act.
Modern phones now alert users to unknown trackers moving with them, so this approach is not only legally risky but often ineffective. If your aim is genuine peace of mind rather than control, this is not the route to take.
Will the Evidence Even Be Usable in Court?
Many people assume that evidence gathered unlawfully is automatically thrown out. In Singapore, the general position under the Evidence Act is that relevant evidence is admissible even if it was improperly obtained, so a recording or a log may still be accepted in a divorce hearing. Knowing what actually counts as adultery evidence for divorce is more useful than gathering material in a way that could backfire.
The catch is that being admissible is not the same as being risk-free. If you broke the law to obtain it, you can still face separate civil or criminal consequences for how you got it, and the court may take a dim view of the conduct. Gathering proof the wrong way can cost you more than it gains.
How to Tell if Your Own Phone Is Being Tracked
Tracking runs both ways, and many people reading this are worried they are the one being watched. If you want to know how to tell if your phone is being tracked, these are the signs to look for.
- Battery drains fast: Hidden monitoring apps run in the background and can flatten your battery noticeably quicker than usual.
- Unusual data usage: Spyware sends information out, so an unexplained spike in mobile data can be a clue.
- The phone runs hot or slow: A device that feels warm or sluggish even when idle may be running something you did not install.
- Unfamiliar apps or settings: Look for apps you do not recognise, or security settings that have been changed to allow unknown installs.
If you suspect your phone is compromised, update your operating system, review and remove unfamiliar apps, change your passwords, turn on two-factor authentication, and consider a factory reset after backing up your data.
The Lawful Way to Find Out the Truth
If you need real answers, the safest path is to work with a licensed private investigator. A properly licensed investigator in Singapore operates within the law, gathering evidence through lawful surveillance in public spaces rather than by hacking phones or trespassing, which means what they document is far more likely to stand up if you ever need it.
It also spares you the legal exposure of doing it yourself. If you are weighing it up, it helps to understand what a private investigator costs and what a professional can and cannot do, so you can make an informed decision rather than an impulsive one.
Disclaimer: This article is general information and not legal advice. Laws can change and every situation is different, so please consult a qualified family lawyer in Singapore before acting on anything here.
Getting Answers the Right Way
Wanting the truth is completely understandable, but the method matters. Tracking your own vehicle may be fine, while covertly tracking a phone or planting a hidden tracker on a car that is not yours can create bigger problems than the ones you set out to solve.
When the stakes are this high, it is worth getting it right the first time. The team at CatchCheating can help you gather answers lawfully and discreetly, and you can contact us for a confidential chat about your situation before you make any decisions.
Need the truth without the legal risk? Contact our licensed team for a confidential, no-obligation consultation.
Frequently Asked Questions About Tracking a Spouse in Singapore
Is it illegal to put a GPS tracker on my spouse’s car in Singapore?
It depends on ownership. If you own or co-own the vehicle, placing a GPS tracker on it is generally permissible because it is your property. If the car belongs solely to your spouse, fitting a hidden tracker without consent can expose you to a civil claim for breach of privacy.
Can I install a tracking app on my spouse’s phone?
Installing a phone tracker app or spyware without consent can amount to unauthorised access under the Computer Misuse Act, a criminal offence carrying a fine of up to $5,000 and up to two years’ jail for a first offence. It is a real legal risk even if you pay for the phone.
Can I use an Apple AirTag to track my spouse?
Placing an AirTag or similar hidden tracker on a person to monitor their movements is covert tracking and can amount to unlawful stalking under the Protection from Harassment Act. Phones now also alert users to unknown trackers, so it is both risky and often ineffective.
Will GPS or phone evidence be accepted in a Singapore divorce?
Under the Evidence Act, relevant evidence is generally admissible even if it was improperly obtained, so it may be accepted. However, if you broke the law to get it, you can still face separate legal consequences, so gathering proof unlawfully can cost you more than it gains.
How do I know if someone is tracking my phone?
Warning signs include the battery draining quickly, unusual mobile data usage, the phone overheating or slowing down, and unfamiliar apps or changed settings. If you are worried, update your software, remove unknown apps, change your passwords and enable two-factor authentication.
