What is a dead man's switch?

A safety system that reacts automatically when a person stops giving an active signal. Originally from railways — with Corlo, your daily tap is that signal.

What is the difference from a personal alarm?

A personal alarm waits for you to press a button in an emergency — exactly when you may no longer be able to. Corlo reverses that: you actively confirm every day that everything is fine.

What happens if I forget the check-in?

Corlo sends a reminder first. Only if no check-in follows does it notify your registered contacts.

Is Corlo a medical device?

No. Corlo is a safety app for everyday life and notifies private contacts only — not a substitute for medical emergency services.

The dead man's switch principle

Safety via dead man's switch — simple, proven, private..

If you're able to act, you give a daily signal. If it's missing, the system responds. Corlo brings this 150-year-old railway principle into your everyday life.

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Proven principle for 150+ years

No tracking, no sensors

GDPR-compliant

No account needed

How it works

One daily tap — or your contact gets notified.

If you tap "All good" every day, nothing happens. If the tap is missing, Corlo first sends a reminder — then, after the time window (24h or 48h), automatically notifies your registered contacts.

Active confirmation

One tap a day shows you're fine. No tracking, no sensors — just your own signal.

Proven logic

The system reacts to the absence of a signal — not to cameras or GPS.

Automatic escalation

If the tap is missing, Corlo alerts your emergency contacts by email — or SMS on the premium plan.

What matters

Simple, because it cuts to what counts.

The dead man's switch principle has worked for 150 years because it needs no unnecessary technology. Corlo transfers exactly that simplicity into private life.

No GPS, no microphone — just your daily tap
Reminder first, then alert — two stages, no false alarms
Up to 5 emergency contacts at once (family mode)

Safety without surveillance.

No tracking, no sensors
The dead man's switch principle needs no GPS location. One tap a day is enough.
You choose who gets notified
No emergency centre, no stranger — only the people you trust.

Trust through simplicity

A system you understand is a system you can trust. The dead man's switch principle is clear enough to need no explanation.

No account required

EU servers (Frankfurt)

SMS provider from Germany (seven.io)

No tracking, no microphone, no camera

No medical data stored

Safety should not require you to give away more data than is truly necessary.

Background

From the driver's lever to the safety app.

The principle is over 150 years old and works because it trusts the active signal of a person — not technology.

1
Late 19th century
Railways: the driver must regularly operate a lever. If the confirmation is missing, the train brakes automatically.
2
Today
Standard in rail, aviation and industry worldwide — proven in safety-critical areas.
3
Corlo
One daily tap instead of a lever. Your loved ones are notified instead of an emergency brake.

Corlo is not a medical device. The app notifies private contacts only — not a substitute for professional emergency services.

Use cases

Frequently asked questions

The proven principle for your everyday life.

Set up your daily check-in in under a minute.

Free. No sign-up. Ready to use immediately.