Leonardo's SignalTrace Promises Safety, But at What Privacy Cost?

GREENSBORO, NC – August 04, 2026 – Defense and security technology giant Leonardo has unveiled SignalTrace™, a newly branded and refined technology that passively listens for the constant chatter of our personal electronic devices. The company presents it as a revolutionary tool for enhancing situational awareness, capable of transforming the invisible cloud of public wireless signals into actionable intelligence. But as it promises to help law enforcement connect dots, privacy advocates warn it may be creating a pervasive surveillance net that tracks the movements of millions without their knowledge or consent.

Formerly known as EOC Plus, SignalTrace represents what Leonardo calls the “next evolution in electronic signature detection.” The system is designed to detect publicly broadcast signals from Bluetooth®, Wi-Fi, and RFID-enabled devices—everything from smartphones and wireless earbuds to vehicle tire-pressure sensors and employee ID badges. By analyzing these signals, the technology creates what the company calls anonymous “electronic signatures” to identify patterns, relationships, and trends that would otherwise go unseen.

“The ability to understand relationships between electronic signals opens new possibilities across a wide range of industries,” said Dr. Andrew Rogers, CEO of Leonardo US Cyber & Security Solutions, in a press release. The rebranding, he insists, is more than a name change; it “better communicates what the technology actually does.” But what it does is the very heart of a growing debate about the line between security and surveillance.

The 'Electronic Fingerprint': How SignalTrace Works

At its core, SignalTrace is a powerful data correlation engine. The technology works by capturing the unique hardware identifiers, such as MAC addresses, that our devices constantly broadcast to connect with other systems. It operates passively, simply listening for signals already in the public domain. Leonardo is clear that the system “does not identify individuals, access communications, or retrieve information stored on personal devices.”

Its true power, however, is unleashed when integrated with other sensor systems, most notably the Automatic License Plate Recognition (LPR) cameras that are already fixtures on police cruisers and infrastructure across the country. Leonardo is a market leader in LPR systems through its ELSAG product line. SignalTrace is designed to seamlessly fuse its data with LPR feeds.

When a vehicle passes an LPR camera, SignalTrace simultaneously captures the wireless signals emanating from within and around it. By correlating the license plate with the unique mix of detected devices, it creates an “electronic fingerprint” for that vehicle. If the same cluster of devices—a specific iPhone, an Apple Watch, and a car's infotainment system—is repeatedly detected traveling together, SignalTrace logs that association. This allows authorities to track a vehicle of interest's patterns even if the license plate is obscured, altered, or swapped. It provides, as one law enforcement document on the preceding technology described it, a way to identify “people of interest” by their digital trail.

“SignalTrace recognizes recurring electronic signatures and helps organizations uncover meaningful relationships that support better operational awareness and more informed decisions,” Rogers explained. The goal is to provide an additional layer of observational data to complement existing technologies within established legal frameworks.

A New Frontier for Law Enforcement or a Dragnet for the Public?

The applications for law enforcement are compelling. Investigators could potentially identify patterns in human trafficking operations, track serial burglary crews who swap stolen plates, or gain intelligence on organized crime networks. By providing a persistent electronic signature that transcends a physical license plate, the technology offers a powerful investigative tool.

However, privacy and civil liberties experts are sounding the alarm, arguing that SignalTrace effectively transforms a car-tracking system into a people-tracking system on a massive scale. The core of their concern lies in the system's indiscriminate nature and the sensitivity of location data.

“This technology doesn't just target suspects; it collects data from every single person who passes a sensor,” warned a senior attorney at a digital rights organization. “It builds a detailed log of your movements, your associations, and your daily life, all without a warrant, probable cause, or even your awareness.”

Critics argue that the company's claim of “anonymity” is misleading. While SignalTrace may not initially collect a person's name, the recurring patterns of a device's location data can be incredibly revealing and easily de-anonymized. Tracking a device's daily journey from a suburban home to an office building, with stops at a specific school, doctor's office, or place of worship, paints an intimate portrait of its owner's life. This metadata, some argue, can be more invasive than the content of a phone call.

“Even if the data is only accessed for legitimate investigations, the potential for misuse is enormous,” another legal expert on surveillance technology stated. “It creates a massive database of people's movements and associations that is vulnerable to hacking, internal abuse, and function creep, where it's used for purposes never originally intended.” Currently, there is no federal law in the U.S. that specifically regulates the collection of public wireless identifiers, leaving a legal gray area that technologies like SignalTrace are poised to exploit. Advocates are calling for urgent legislative action, demanding clear rules on data retention, access controls, independent audits, and, most critically, warrant requirements for searching such vast repositories of public movement.

The Market for Intelligence and Leonardo's Strategic Play

The introduction of SignalTrace is a calculated strategic move by Leonardo, positioning the company to capitalize on a booming market. The global public safety and smart city security sectors are projected to be worth hundreds of billions of dollars within the next decade, fueled by urbanization, IoT proliferation, and a demand for data-driven security solutions.

Leonardo already has a significant foothold in the U.S. law enforcement market, with its ELSAG ALPR systems deployed in thousands of federal, state, and local agencies. SignalTrace serves as a powerful, high-tech upsell to this existing customer base, offering to enhance their current infrastructure with a new layer of intelligence. The integration is a key selling point, promising a turnkey solution for agencies looking to expand their surveillance capabilities.

Beyond policing, Leonardo is targeting SignalTrace for a broad range of applications, including transportation and mobility analytics, critical infrastructure monitoring, and even combating organized retail crime. By understanding the flow of devices, a city could theoretically optimize traffic patterns, or a high-security facility could monitor for unauthorized electronics. This aligns with Leonardo's broader corporate vision to be a global leader in security and data, developing dual-use technologies that serve both defense and civilian markets.

As our world becomes increasingly saturated with connected devices, the data they emit has become a valuable commodity. SignalTrace represents a sophisticated effort to mine this data for security and operational intelligence. For Leonardo, it is a key piece in its strategy to dominate the future of the high-tech security landscape, where success is measured by the ability to turn noise into actionable insight. As cities and agencies weigh the trade-offs, the debate over this powerful technology is just beginning.