Google Person Finder is a way to track people in the aftermath of a disaster. The web application uses crowdsourcing: people can report missing people and provide information to help locate them.
Google Person Finder can also be accessed by mobile phone using an SMS short code.
Google crisis maps is a way to keep track of casualties and damage. It is created with the help of crowdsourcing data and other critical information.
Google crisis map can be accessed on desktop and mobile and gives public alerts.