Twopit field trials with Italian firefighters show promise for resilient emergency communications

When conventional signals could no longer propagate inside underground tunnels, Twopit came into action.

Twopit, the experimental communication technology developed by Italian inventor Emanuele Costanzo, is now being tested in real operational environments together with operators from Italy’s Corpo Nazionale dei Vigili del Fuoco.

The latest field trials took place inside technical tunnels and confined underground spaces, among the most challenging environments for any communication system. Reinforced concrete, narrow passages, metallic structures, pipes, physical barriers and the absence of clear signal paths can quickly degrade or interrupt standard radio and network communications.

These are precisely the conditions in which Twopit was designed to operate.

During the tests, the system was brought directly into the tunnels and used while personnel moved through confined spaces. The goal was not to perform a controlled laboratory demonstration, but to understand how the technology behaves in a real environment where communication continuity can become critical.

According to the results observed during the trials, Twopit continued to support the exchange of operational information in areas where conventional signal propagation became unstable or severely limited.

The system was tested through a dedicated application designed for field coordination. The platform allows the creation of a local operational room, the management of connected operators, message exchange, network status monitoring, emergency alerts, signal analysis and device tracking within the intervention area.

This makes Twopit particularly relevant for emergency scenarios where traditional infrastructure may be unavailable, internet access may be absent and radio coverage may be compromised.

For firefighters, rescue teams and civil protection units, communication inside tunnels, underground structures, collapsed buildings, industrial facilities and confined technical areas remains one of the most complex operational challenges. In these contexts, even a small improvement in communication reliability can support coordination, safety and response time.

The images collected during the trials show a concrete transition from research to operational testing: technicians, developers and rescue personnel working inside underground environments, not in ideal conditions, but in spaces where signal degradation is part of the challenge.

Twopit is not being presented as a replacement for existing emergency communication systems, but as a complementary technology designed to add resilience when conventional solutions reach their limits.

The first results are highly encouraging.

The trials are providing valuable data to improve network stability, signal management, operator tracking and emergency functions. Further testing will help define how the system can evolve and where it can provide the greatest operational value.

For Twopit, this is an important step forward.

A technology built for resilient communications cannot be evaluated only in the laboratory. It must be tested where signals fail, where obstacles matter, where infrastructure is missing and where every piece of information can become operationally relevant.

Inside the tunnels, Twopit has begun to demonstrate its real potential.

Where the signal stops, Twopit continues.