Music events
Thousands of people on a few dozen hectares. Mobile coverage saturates as soon as the gates open, and the teams are everywhere at once.
Our setup at a festivalWe install a network for your teams, on a site or along a course. It works with no mobile coverage.

At a festival, mobile coverage is patchy and what is left of it saturates as soon as the gates open. On a mountain course, there may never have been any coverage at all. Either way, a volunteer has a phone in hand and nobody at the other end.
Security and first aid teams keep their radios. Bermud is for the people who have none, and it carries written messages and alerts.
500 m
Range of one unit
1 to 600 ha
Coverage of a network of units on a site
No data cable
Units talk to each other by radio
Thousands of people on a few dozen hectares. Mobile coverage saturates as soon as the gates open, and the teams are everywhere at once.
Our setup at a festivalA course stretching over tens of kilometres. Isolated posts, steep ground, and stretches that have never had coverage.
Our setup along a course

Cairn units fixed to what is already there, three to eight metres up: a fixing point along a course, a mast, a building, a stage structure. They talk to each other by radio, from one end of the setup to the other.
We put them up before your event opens and take them down once it is over.
The relay unit. Fixed to your structures, it carries the network and relays messages from unit to unit.
Bermud Cairn
The bridge. It connects a volunteer's phone to the network, wirelessly and with nothing to set up.
Bermud Link
The operations software. Deployment, network supervision and team coordination.
Bermud AtlasA volunteer raises an alert from the app. It travels to their Link, hops from unit to unit, and reaches the control point the organisation has designated. None of it goes through a mobile operator.
Phone
Link
Cairn
Cairn
Link
Control roomThe app offers a set procedure for situations that call for a defined response. These procedures complement the trained contacts and the welfare provision already in place at your event.
Sexual violence and harassment
A discreet report from the phone, sent to the control point the organisation has designated.
Assault
An alert sent with a single tap, carrying the position read by the phone.
Person taken ill
The first aid point receives the request and knows where it comes from.
Accident
The information reaches the control room and the teams concerned.
Coverage simulation on an open air site, with units placed on the existing infrastructure. Along a course, the units equip the points that matter and the network takes the shape of a line.


Two simulations, two framings.
We fix the units to the chosen anchor points and we check the coverage in real conditions.
A short hands-on session for your volunteers. The app takes a few taps.
We stay reachable for the whole event, maintenance and replacement included.
We take everything down as soon as the event ends. You have nothing to store.
A full service. You are not buying hardware.

Erwan Giry-Fouquet, founder
Send us your site plan or your route, with the dates. We come back with a number of units and locations, to be confirmed on the recce.