The app -- Save Your Sister (SYS) -- has three major functions, namely (a) to identify the users current position, (b) to alert others of where she if she is in danger and (c) to take and transmit photographs of the attacker should an assault actually happen -- and it could work like this.
In the "dormant" state when the woman is under no apparent threat, the SYSapp simply keeps a record of the current position of the phone ( and the woman carrying it) and makes sure that both GPS and data transfer is operational.
If the woman moves into an area where is she is alone and is otherwise feeling threatened and scared, she "arms" the app. Immediately SYSapp starts transmitting the GPS determined position of the woman to a central server. Now two things happen.
- A message goes to the nearest police station or outpost that is registered with the central server so that police know that there is a woman who is feeling scared.
- Other peer-users of SYSapp, volunteer "good samaritans", who are in the physical vicinity of the woman get a message on their SYSapp/phone and are alerted to the fact that there is a woman nearby who needs help. The position of the woman also shows up as on a Google Map inside SYSapp.
These peer user, good samaritans, if they are in a position to help, can now activate their SYSapps and start converging on the woman. Observers at the central location can watch the movement of the active "good samaritans" on Google Maps. By observing the respective positions of the woman and the "good samaritans" central observers can co-ordinate their movements as well. The woman can be informed via SYSapp that help is on the way.
In the eventuality of an actual assault, the woman will simply "activate" the SYSapp. Now two things will happen.
- The good samaritans who are converging towards the woman will now get a red alert on their SYSapp and they should start running towards the woman in distress and
- SYSapp will now start taking pictures of the crime scene using the camera phone and start transmitting them automatically. If the woman can just point the camera towards the criminal, his face will be photographed and stored on the central system.
With luck, the "good samaritans" would arrive at the scene in time and prevent the crime but even otherwise the police will have enough pictures of the assailant to nail him down later.
Obviously SYSapp will not be useful in remote, rural areas where woman may not carry smartphones capable of running apps. But in urban and semi rural areas, even if there one or two "good-samaritans" around who are willing to help a woman in distress, quite a few rapes can be prevented.
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