Push-to-talk voice and data, SOS with position and messages, phone to phone, on compatible phones running Vizible Zone. No cellular network, no server, no extra device. A communications fallback that complements existing radios and networks.
Switch Vizible Zone off, then on.
Help where there is no signal
In preparation.
The situation
An earthquake. A building is down, and so is the network.
A person is trapped inside. Rescuers work the rubble in teams, out of sight of each other, and every phone shows no signal. Nobody can talk, say where they are, or call for help. The same happens in basements, on overseas deployments and when a network is overloaded in a major incident.
12Awareness and understanding
The team’s phones keep working, because they never needed the network.
Voice, SOS, positions and messages run directly between the phones: D2D using Direct Mode Operation (DMO).
Today: a trapped person’s phone opens a voice and data channel. Rescuers can hear and answer them.
4Warning
It tells the rescuers and the command post.
Today, a person presses SOS and the call for help goes out with its position. Teammates talk in their own private group, where an SOS tells them who is calling and where; a phone outside the group hears nothing.
Who is told: the team, the rescuers nearby and the command post. Nobody else.
What you get
Your team keeps its voice, its “I am here” and its call for help where the network is gone, on the phones they already carry.
Built for first responders (police, ambulance, rescue teams and the armed forces), for utilities and field crews, and for a person in distress or trapped. It complements existing radios and networks.
Where it stands
Today
Works now, and we can show it to you.
In development
Being built, or shown so far in the lab or in field trials. Not a product yet.
Utilities and field crewsPush-to-talk and messages where there is no network.Status: Today
SOS with positionOne press sends a call for help, with your available position, to teammates on supported phones in coverage. In our tests it arrived within seconds, even indoors (measured on our test phones, November 2026).Status: Today
Team mapThe available positions of teammates in coverage, and how far away they are.Status: Today
Messages, photos and short clipsOver the same direct link.Status: Today
Private groups, joined by a touchTwo phones touch, and a teammate is in. A phone from another group does not hear yours.Status: Today
Ready while asleepWith the screen off, the phone still wakes to the group’s voice.Status: Today
Inside the apps people already haveDelivered as an SDK inside an existing app, such as an emergency app, so nobody installs anything on the day of a disaster.Status: Today
Automatic trapped modeA trapped person’s phone opens a voice and data channel. Rescuers can hear and answer them.Status: Today
An alert across the cityOne alert from the command post will reach phones across a whole city, with no network. Shown so far in computer simulation.Status: Vision
SOS beyond the teamA call for help will carry its position to the people nearby and to the nearest command post, anywhere in the city.Status: Vision
A message to one personA message will travel across the city to one phone, one group or the command post, and the sender will know it arrived.Status: Vision
Shelters and places indoorsAlerts will also reach people sheltering indoors.Status: Vision
Built into the phoneIt will be part of the phone itself, for every user, with no app to install.Status: Vision
Reaches significantly farther than standard device-to-device (D2D) links. We state no range figure: walls, floors and bodies decide reception, not distance. Your pilot measures it.
Who can hear it?
Phones in the group. A phone from another group does not hear it.
Can two people talk at once?
No. It is push-to-talk: one talker at a time.
Does it reach a whole city today?
No. It is a vision, shown so far in computer simulation.
Will it work inside buildings and shelters?
Walls decide reception, and we have not measured this yet. It is the first thing a pilot measures.
Try it
A building has collapsed and the network is gone. The scene shows what works today: a trapped person’s phone opens a voice and data channel, and the rescuers’ phones nearby receive it directly. Rescuers can hear and answer the trapped person.
When the networks fail, the city will still get the message.
Vision: one alert will cross a whole city, from phone to phone. A call for help will carry its position to the nearest command post. A message will find one person, one team or the command post, and the rest of the city will stay quiet. No cellular network, no internet, nothing extra for residents to carry. Speech will be sent as a short text.
Shown so far in a computer simulation of a whole city. It is not built yet, and it has not been measured in the field. What it grows from works today: SOS with position.
Who is told: an alert, the whole city. A call for help, the people nearby and the nearest command post. A message, only the one it is addressed to. Nobody else.
Choose what is sent, then switch Vizible Zone off and on.
A city without a network
In preparation.
Request a pilot
Bring us the site where your team loses contact.
Targets are agreed before the pilot starts, measured on your site and reported in full, failures included.