This Jammer Wants to Block AI Wearables That Always Listen. It Probably Won’t Work
Deveillance also claims that the Specter can detect nearby microphones by detecting radio waves (RF), but critics say that detecting a microphone via RF emissions is ineffective unless the sensor is close to it.
“If you can find and detect components with RF the way Specter wants, it could literally change the technology,” Jordan wrote in a text to WIRED after building a test tool to detect RF signatures in microphones. “You’ll be able to do radio astronomy in Manhattan.”
Deveillance is also looking at ways to integrate nonlinear junction detection (NLJD), a very high frequency radio signal used by security professionals to detect hidden microphones and intruders. NLJD detectors are expensive and are primarily used in professional situations such as military operations.
Even if the device can find the exact location of the microphone, objects around the room can change the way the frequencies spread and interact. Dropped frequencies can also be a problem. There hasn’t been enough research to show what effects ultrasonic waves have on the human ear, but some people and many pets can hear them and find them unpleasant or painful. Baradari agrees that his team needs to do more testing to see how pets are affected.
“They can’t do this,” developer and YouTuber Dave Jones (who runs the EEVblog channel) wrote in an email to WIRED. “They’re using an old-fashioned word-of-mouth trick that means it will find every type of microphone, when almost all they’re doing is scanning for Bluetooth headsets. Baradari adds that Specter uses a combination of RF and low-power Bluetooth to find microphones.
WIRED asked Baradari to share any evidence of Specter’s effectiveness in identifying and blocking drones on a person’s property. Baradari shared a few short video clips of people putting their phones to their ears and listening to audioclips—presumably captured by Specter—but these videos do little to prove the device works.
Imperfect Future
Baradari took the criticism in stride, acknowledging that the tech is still developing. “I appreciate those comments, because they make me think and see a lot of things,” said Baradari. “I believe that with the ideas we have and combining them into one machine, these concerns can be solved.”
People quickly made fun of Specter I online, calling the technology a cone of silence A mound. Now, Deveillance’s website reads, “Our mission is to make the cone of peace a reality.”
John Scott-Railton, a cybersecurity researcher at Citizen Lab, which criticizes the Specter I, praised the size of the device as an indication of the real hunger of these types of gadgets to restore our privacy.
“The silver lining of this explosion is that it’s a ring-like moment that highlights how quickly consumer attitudes have changed towards ubiquitous recording devices,” Scott-Railton said. “We need to build products that do all the great things that people want but don’t have massive privacy and consent violations. You need device-level controls, and you need rules for the companies that do this.”
Cooper Quintin, senior staff expert at the Electronic Frontier Foundation, echoes those sentiments, even if critics believe Deveillance’s efforts are flawed.
“If this technology works, it could be useful to many,” Quintin wrote in an email to WIRED. “It’s great to see a company creating something to protect privacy instead of using new and clever ways to extract data from us.”
