( CNN ) -- Grillo is a device that aims to provide a low - level earthquake warning system to the masses in Mexico . A number of major fault lines are situated along Mexico 's Pacific Coast . Some say a widespread program of public education is needed so people know what to do when seismic activity occurs .
Grillo is a device that aims to provide a low - level earthquake warning system to the masses in Mexico . A number of major fault lines are situated along Mexico 's Pacific Coast . Some say a widespread program of public education is needed so people know what to do when seismic activity occurs .