Indonesia launched a new hi-tech system on Tuesday aimed at detecting a potential tsunami and providing faster alerts in a region battered by frequent earthquakes, Reuters reported. The sprawling archipelago of some 17,000 islands, which lies in the seismically-active "Pacific Ring of Fire", was hit by a devastating tsunami about four years ago that left an estimated 170,000 people dead or missing in Aceh province. Since then, Indonesia has installed some warning systems, but experts have said the country's disaster preparedness is still a work in progress and large parts of the country are still not covered. The new system, built with assistance from foreign bodies including the German Research Centre for Geosciences, will use sensors placed on the seabed and shore to relay details of seismic movements to buoys on the surface. The information is then transmitted via satellite to a tsunami early warning centre in Indonesia. "We are starting the world's most advanced tsunami early warning system able to issue the quickest possible warnings with a high degree of reliability," Thomas Rachel, Germany's parliamentary state secretary, said at the launch in Jakarta. The system will be fully operational by 2010.