This could potentially be more useful in a closed network environment, which would allow you to deploy lots of very cost effective seismographs to supplement the systems that are already in place. I don't know that this would be all that worthwhile on people's home computers, as many have mentioned, due to buses, trains, speakers, etc, but in a controlled environment...
If the earthquake occurred on land, then you wouldn't have to worry about a tsunami. The idea behind this system is that you could detect the seismic activity that precedes a tsunami and thus put out a warning for it, not the earthquake.
This could potentially be more useful in a closed network environment, which would allow you to deploy lots of very cost effective seismographs to supplement the systems that are already in place. I don't know that this would be all that worthwhile on people's home computers, as many have mentioned, due to buses, trains, speakers, etc, but in a controlled environment...
If the earthquake occurred on land, then you wouldn't have to worry about a tsunami. The idea behind this system is that you could detect the seismic activity that precedes a tsunami and thus put out a warning for it, not the earthquake.