Gadgets marketed to domestic abuse victims to help them find hidden spy cameras, microphones and trackers are largely ineffective and could actually leave victims in more danger than if they had never used them at all, according to new research.
The study found that many of the commercial detection devices widely available to buy online and in shops are simply not up to the job. Victims who use them and get a clean result may walk away thinking their home is safe, when in reality a hidden device could still be watching or listening to their every move.
These consumer tools typically work through a handful of methods. Some scan for wifi or Bluetooth signals, others pick up infrared light that certain camera lenses emit, and some claim to detect radio frequency signals from transmitting devices. On paper, it sounds reasonable. In practice, researchers found the reality is far more complicated.
The problem is that modern spy devices have become increasingly sophisticated. Some only transmit data at certain times, meaning a scanner sweeping for signals could easily miss them. Others are designed to blend in so effectively with everyday household objects that even a physical search would struggle to find them. A phone charger, a smoke alarm, a clock on the wall. Any of these could conceal a camera, and a handheld detector bought for a few pounds off the internet is unlikely to flag it.
For domestic abuse victims, the stakes could not be higher. Covert surveillance is a recognised form of coercive control, and abusers use hidden devices to monitor their partners and former partners, keeping tabs on their movements, their conversations, and who they spend time with. For someone trying to leave a dangerous relationship or rebuild their life after one, the presence of a hidden camera or tracker is not just a privacy violation. It is a tool of ongoing intimidation and control.
The concern raised by the research is that a false negative from one of these detectors could have serious consequences. A victim who believes their home has been swept and cleared may speak more freely, meet with support workers, or make plans they would otherwise have kept hidden. If a device was missed, that information could reach their abuser.
Experts in the field of technology-facilitated abuse have been raising concerns about this gap for some time. The market for consumer detection gadgets has grown alongside wider public awareness of stalkerware and hidden cameras, but the quality and reliability of these products varies enormously and there is little regulation governing what manufacturers can claim.
Specialist organisations that support domestic abuse victims have increasingly had to develop their own protocols for checking devices and advising survivors on digital safety. But access to that kind of expert support is not available to everyone, and many victims will turn to cheaper, more accessible options first.
The research adds to growing pressure on both the government and tech industry to take the issue of technology-facilitated abuse more seriously. Campaigners have long argued that the law has struggled to keep pace with the ways abusers use technology to control and monitor victims, and that survivors are often left navigating complex technical threats without adequate support.
For now, the message from researchers is a stark one. If you are a domestic abuse victim concerned about hidden surveillance devices in your home, a cheap detector from an online marketplace is unlikely to give you the answers you need. Reaching out to specialist domestic abuse services or organisations with expertise in tech-facilitated abuse is a far safer route to getting proper help.