Build a security group with text messages.
Panic Button is an Android application that lets you set up a security group based on text messages.
From your contact list select those you want to be part of your safety net. As we know that in an emergency the reaction time is crucial, we have implemented an easy and quick to launch an alert to your network of contacts. Although this application is not visible or the phone is off screen, just press 5 or more times the power button on your phone to activate the alarm. Likewise, if the application is open at the time, you can press the panic button to execute the same action.
If the person receiving the alarm text messages DOES NOT have the application installed, you simply receive an SMS alert with the coordinates of the person who needs your help, but if you also have installed the application you will hear a continuous alarm audio that will identify immediately panic. For disabling the alarm should enter the application and cancel the alarm.