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As a personal item for communication, mobilephone ofen becomes people's tool for rescue when they get into dangerous situation. Most people can't make a successful phone call for help under circumstances like rape or kidnap. People's holding power will be much more stronger than their normal standard when they're very frightened or nervous. Emergency Messenger is an ordinary mobilephone embedded with a grip sensor.When people's holding power is larger than the maximum of their own normal value, it will start the alarm program automatically and send the location information to the police or other contacts they set before.
Lei Shi, Yujie Hong