In this version you will send your gps location in sms.
you just start a program enter phone number for sms and for dial in case you're in trouble and then activate the button - you need just wake up your phone and then you can press and hold on touchscreen button or press volume UP and you will start a call and send sms, volume DOWN will update your current gps coord.
Or you can press few times power button and you will silently send sms on both numbers.
You can erase phone numbers and try to push buttons to check how is it works.
you should read policy.
alfa is not getting contact list, i decided that it will be alright to get phones from phone book - it's much easier to choose the mobile number, if you don't want to seek through phones numbers, just don't press that button, it's not working properly yet .
< a href="https://plus.google.com/+Symbiants" > +Symbiants
you can find more "emergency" buttons in google store of any kind