Follows the load in motion
The beacon is on the hook block, not on the cab. The safety bubble follows the load through every translation, slewing and lowering.
Vigigrue
Above people,
vigilance is shared.
The beacon snaps magnetically onto the hook block in 30 seconds and follows the load. On every passover, your workers are warned. No crane modification.
Free pilot, on your jobsite · Reply within 24h
< €300/month
1 equipped crane + 10 workers protected
No commitment — volume pricing from 6 months or on multi-site rollouts
★ SEED 2026 Program
Vinci Léonard
9 startups selected
Snapped on in 30s
Onto the hook block, no work on the crane
You are
Why we exist
A load should never take anyone by surprise.
The most dramatic risk in lifting isn't the load falling itself — it's the worker on the ground not knowing it's passing overhead. The crane operator sees everything from above. Below, coactivity, noise, dust masks and other machines make that signal invisible.
Vigigrue makes that information tangible, immediate, shared: a magnetic beacon on the hook block, one wristband per worker, a safety bubble that follows the load.
30 sec to snap the beacon onto the hook block
€0.50 per day to protect a worker
100% standalone — no crane wiring
Vigigrue in action
See how the bubble follows the load.
On the ground
The hook block gets equipped, the load becomes visible.
On every passover, the ground crew is warned.
The crane operator gets ready. The hook block receives the magnetic beacon, secured by a small lanyard. Ground workers wear their wristbands, handed out by the supervisor in the morning.
With every load movement — translation, slewing, lowering — the safety bubble moves with it. When the load passes over a worker, the wristband vibrates, the beacon flashes. Information flows without a signaler, without radio, without depending on one person's vigilance.
No crane wiring
Bubble 1 to 40 m, configurable
An equipped crane
Ready in 5 min 1
Beacon
snapped onto the hook block, follows the load
10
Wristbands
worn by ground workers
Management app
range 1 to 40 m, vibration pattern, exclusion — configurable in 2 min
The beacon snaps on and comes off in 30 seconds.
When the crane changes jobsite, safety follows it.
On the ground
From the Marseille building site to CERN, anywhere a load passes over a person.
★ Reference
Building site, tower crane
The worker on the ground. The load overhead. The alert on the wrist.
Beacon installation on the hook block
Hook block equipped on sensitive site
Load passing over a worker
Tower crane in operation
Photos taken on our clients' jobsites · framing anonymized
Want to test on your next lifting operation?
We come on-siteWhere others don't go
Vigigrue adapts to your crane, not the other way around.
Any crane, any man basket
Magnetic mount in 30 seconds on any hook block, rigging tool, man basket, mobile crane hook or telehandler. One hardware reference for all your lifting equipment.
No crane modification
No drilling, no wiring, no intervention. The beacon goes on in the morning, comes off at night. Compatible with any fleet, rented or owned.
Building site AND outdoor works
From Marseille shell construction to CERN, from industrial platforms to wind farm works — Vigigrue deploys anywhere there's lifting with people below.
On lifting jobsites
Construction leaders trust us.
From the Marseille building site to the Cadarache nuclear site, from CERN to commercial real estate — Vigigrue is already on the ground.
★ Reference
Vigigrue equips lifting operations on sensitive sites.
Where precision matters most. Our solution snaps onto the hook block, follows the load, and alerts ground crews without depending on a network or dedicated signaler.
Operational
· Multiple jobsites ongoing
Multiple building sites
tower cranes in dense urban areas
Sensitive site, PACA region
lifting operations in classified zone
Southeast regional works
multi-site deployment
Overhead power lines
coactivity and aerial-zone sites
Multiple active jobsites
with French construction majors
Simple pricing, no commitment
A few days of crane rental pay for a year of Vigigrue.
Under €300/month for one equipped crane and 10 protected workers. Lifting accounts for a major share of serious jobsite accidents — Vigigrue anticipates them before they happen.
À la carte pricing
Flat fee
per site / month
€129
Hook block beacon
per equipped crane / month
€49
Worker wristband
per wristband / month (~€0.50/day)
€9.90
No commitment. Activate for 1 month, stop whenever you want.
€277
per month
Package offer
1 site (€129) + 1 crane (€49) + 10 wristbands (€99)
= €277/month
How about equipping your next crane?
Free pilot, on-site, with one of our founders. Reply within 24h.
They trust us
Construction leaders deploy our solutions on their jobsites
Backed by
As seen at
Our commitment
Safety your crews actually want to wear.
Designed from accidents we've seen — not from ones we've imagined.
Simple, intuitive, instantly operational technology to protect every person on your sites — regardless of role or environment. Shared vigilance combined with cutting-edge innovation: real-time safety, no complexity, no compromise. Sharing Worker is your trusted partner in Security as a Service.
Discover our solutions
Région Sud · PACA
Co-founders · Prevent Innov' SAS
Florent & Olivier
Frequently asked questions
What crane operators and supervisors ask us.
Does the beacon really follow the moving load?
Yes — and that's the whole point. We don't fix the beacon on the crane; we snap it magnetically directly onto the hook block or rigging tool. The safety bubble (1 to 40 m) therefore moves with the load. Whatever the crane operator does (translation, slewing, lowering), workers are warned the moment the load passes over them. A small lanyard or strap secures the beacon in case of impact.
Is it compatible with every type of crane?
Yes. The beacon is fully standalone — internal USB-rechargeable battery, magnetic mount. It installs on any lifting equipment: tower cranes, mobile cranes, overhead cranes, hoists, telehandlers. No wiring, no drilling, no machine modification. You can also use it on a man basket (under the basket) to protect lowering operations.
What if there are multiple cranes on the same jobsite?
Each beacon can be set up with a different vibration pattern on the wristbands. When you have 2 or 3 cranes operating in the same area, your workers immediately know which one is approaching — useful directional information for deciding where to take cover. One wristband per worker is enough, no matter how many beacons are on the jobsite.
Does it work on jobsites with no network (nuclear, tunnels, remote sites)?
Yes. Vigigrue runs fully standalone, with no Wi-Fi or 4G. Internet is only required for the initial setup — after that, the system is 100% local. It's a major selling point on defense sites, nuclear sites (Cadarache), remote-area jobsites, or tunnels where video is banned or inoperable.
What's the exact cost, and is there a commitment?
€277 per month for our package offer (1 equipped crane + 10 wristbands for your workers). No commitment — activate for a short-term jobsite, stop when it's done. Same logic as renting construction equipment: you pay when you use it. This offer is limited to the first 100 jobsites.
