The best tools for tracking down spirits have always been the ones fallible enough to find something.
The small, Syracuse, New York-based company K-II Enterprises makes a number of handheld electronic devices—including the Dog Dazer (a supposedly safe, humane device that deters aggressive dogs with high-pitched radio signals)—but it is best known for the Safe Range EMF. The size of a television remote, the Safe Range EMF detects electromagnetic fields, or EMF, measuring them with a bright LED array that moves from green to red depending on their strength. Designed to locate potentially harmful EMF radiation from nearby power lines or household appliances, the Safe Range has become popular for another use: detecting ghosts.
Since its appearance in the show Ghost Hunters, where the ghost hunter Grant Wilson claimed that it has been “specially calibrated for paranormal investigators,” the Safe Range (usually referred to as a K-II meter) has become ubiquitous among those looking for spirits. Search for it on Amazon, and many listings will refer to it as a “ghost meter,” an indispensable tool in the ghost hunter’s arsenal. It isn’t alone among EMF meters: Of the best-selling EMF meters on Amazon, two out of the top three are explicitly marketed as ghost meters.
Scanning the various product descriptions and reviews, though, what becomes clear is that the K-II Safe Range is a relatively unreliable electromagnetic field meter. It operates only on one axis (you have to wave it around to get a proper reading), and it’s unshielded, meaning that it can be set off by a cell phone, a two-way radio, or virtually any kind of electronic device that occasionally gives off electromagnetic waves. The reviewer Kenny Biddle found he could set it off with, among other things, a computer mouse and a camera battery pack.
Yet it’s precisely because it’s not particularly good at its primary purpose that makes it a popular device for ghost hunters. Erratic, prone to false positives, easily manipulated, its flashy LED display will light up any darkened room of a haunted hotel or castle. Which is to say, its popularity as a ghost hunting tool stems mainly from its fallibility.
The K-II isn’t the only consumer-electronic item used by ghost hunters. Often it’s sold in kits that contain other devices, such as a Couples Ghost Hunt Kit, with two of everything, so you can build “trust and lasting memories when the two of you, alone in some spooky stakeout, look to each other for confirmation of your findings and reassurance!” There are devices that have been engineered specifically for ghost hunters, like a ghost box, which works by randomly scanning through FM and AM frequencies to pick up spirits’ words in the white noise. But mostly, ghost hunters use pre-existing technology: not just EMF meters, but also run-of-the-mill digital recorders, used to capture electronic voice phenomena, or EVP. An investigator records her or himself asking questions in an empty room, with the hope that upon playback ghostly voices will appear.
Electronic voice phenomena have continued to rank among the most prominent “evidence” offered of paranormal activity, it seems, precisely because humans are hardwired to dredge meaning out of chaos. Evolutionarily, we have long needed to discern the sight or sound of a predator despite its camouflage, which has led us to look for patterns where they might not be immediately evident. The quirks and shortcomings of technology plays directly into this biological need: throwing out random static and noise that is primed to be transmuted into meaningful signals. Ghost hunters work through confirmation bias. Looking for proof of the paranormal, they will find it in anything, but most readily in static, gibberish, and errata—technological noise in which we’re hardwired to find false positives.
The only thing that’s changed recently is the proliferation of consumer electronics associated with ghost hunting. In an age of iPhones and Fitbits, ghost hunters are just one more niche market, lapping up the latest and greatest gadgets for sale. But there’s one crucial difference: most purveyors of consumer electronics keep their consumers happy by constantly refining them until they’re free of bugs. Ghost tech works the other way, by actively engineering glitches—the more, the better.
Such seekers can easily be written off as kooks and outliers, but there’s something paradigmatic in their use of faulty devices. The rise of the internet and other new technologies promised a new Information Age, one in which data, truth, and knowledge were the new currency, where the future would be built on information itself. Twenty years on, there’s an endless labyrinth of conspiracy theories, fake memes, trumped up stats, and fabricated evidence. The world’s knowledge is just a Google search away, but it comes to us inextricably intertwined with the world’s bullshit.