A deadman's switch connected to a manner of things. It basically works by 'non-existence' instead of existence and fires a webhook once something stops. For example, if my computer is turned off for a couple of weeks, it will send an email to loved ones. When I go day hiking, something similar happens when my phone loses service/power for more than a couple hours and sends a low-quality gps track. Basically it's if-this-then-that but more like if-this-stops-then-that. I have it tracking all kinds of things, like git-commits-per-person, server/device health metrics, and things like that.
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