Google engineers built Google Person Finder in response to the January 2010 Haiti earthquake in order to help those affected by the earthquake connect with their loved ones. In 2005, during the aftermath of Hurricane Katrina, multiple websites created missing person registries, so families and aid workers had to search in multiple places when looking for information. Google Person Finder addresses this problem by accepting data from other registries in a common format and searching over all the data. The common format is called PFIF, and it was established by volunteers of the Katrina People Finder Project.