This device is actually a button that sends a signal of your location to your contacts so that they can track you. In case of any extreme fright you just have to push the button and help will be there for you, if you have a faithful contact list.
It will also send an alert signal of your location to people nearby that location.You just have to unlock the device before pressing the button.
The best part is that it will also provide a map to your contact that comes to rescue you. And it also serves live streaming so that the savior can make a video of any violence