US Patent 7679505 Emergency alert system

An emergency alert system is disclosed. The invention employs an emergency alert message, which directs end users to take some particular action like evacuating an identified geographic area. The invention further employs a geographic area message, which is based on a particular geographic area within which all persons should receive the emergency alert message. The invention utilizes an emergency alert enabled device that receives both the emergency alert message and the geographic area message. The emergency alert enabled device then determines whether it is located within the geographic area of concern, and if so, presents the emergency alert message to the end user.