Dead Man's Switch
Version 1.0.0 · Updated 2026-07-30
CORE DEFINITION
A safety device (such as a train control handle) that requires the operator to continuously apply an action (e.g., holding a button) to keep the system running. Once the operator becomes incapacitated (e.g., releases the handle, dies), the system automatically switches to a safe state (e.g., braking).
SCAFFOLDING EFFECT
Reduce cognitive load
Negative-trigger protection. For critical assets (e.g., digital legacy, core secrets), set up a mechanism like "if I don't log in every 30 days, automatically send to XX." This is the last line of defense against unpredictable risks.
Anchor fast decisions
The system operates by default only when the main controller continuously "actively maintains" it. Once active input stops (incapacitation, disconnection, timeout), it automatically enters a preset safe state. It is "negative-trigger" rather than "positive-trigger"—it does not require a person to perform the correct action in a crisis, but relies on "non-action" to provide a safety net.
MINIMUM ACTION
In progress 0/4Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Dead_man%27s_switchverified
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