Abstract: This paper is about the use of peopleís smart phones to send messages in a situation where help is needed and the infrastructure used to communicate cannot be used. The paper focuses on Wi-Fi and Zigbee wireless technologies. Smart phones in the affected areas may turn themselves into nodes and help in forming a temporary network. The Wi-Fi technology is used here because of its high range when compared to other wireless technologies. Zigbee has the lowest power consumption among all the wireless technologies. So when these two are used in unison they provide a perfect platform for the disaster management. The message sent to the rescuer is the information collected through the GPS module in the victimís phone.

Keywords: Smartphone, natural disaster, Wi-Fi, Zigbee, GPS.