Two billion accidental seismometers

The New York Times reports on the recent Venezuela earthquakes:

Venezuela does not have a national early warning system of its own, but people with Android phones received alerts from Google’s Earthquake Alerts system, which can pull data from more than two billion phones equipped with built-in accelerometers. The same sensor that detects rotation on the screen can also sense vibrations from seismic waves.

This is recombination fueling innovation. Nobody put accelerometers in phones to create an earthquake-warning system. Instead, Google engineers stitched together built-in sensors, location data, push notifications, and seismology know-how to create something entirely new: a distributed, planet-scale earthquake-detection network.

Of course, this tech is possible only because the devices we carry with us are capturing and sharing, in real time, both our locations and the slightest vibrations.