The C Tracker is an intelligent application that ultimately aims for the prevention and protection against child abuse and to ensure their safety and security; especially for the school going ones. The most important part of the proposed system is a smart watch that ensures the safety and provides security to the child by using an SOS button. Also it keeps track the locations of the child for further verifications and references.
The child application will send notifications to the parent application and to the saved official numbers that includes the location and picture of the child’s surroundings in case of any trouble so that the associated ones can take necessary actions as soon as possible. The very important advantage of the system is that, the parent will receive alert message to their preset phone number even if the parent is offline. Also, the application provides the facility to send a pre-alert message to the saved numbers in case, if the child feels any source of insecurity.
The app named C-TRACKER. By this mobile app,we have covered all these aspects by using a special watch.The watch is provided with an SOS button located on the side of the watch, which triggers the panic mode when pressed. On activation of the panic mode, the camera attached to the watch clicks the pictures of the surroundings and the GPS module collects the location coordinates of the kid and transfer the same to the parent app and to the official numbers that are saved in the child app. Geocoding and reverse geocoding are the technologies that are applied here. Geocoding is the process of converting addresses (like a street address) into geographic coordinates (like latitude and longitude), which you can use to place markers on a map, or position the map. Reverse geocoding is the process of converting geographic coordinates into a human-readable address.
The camera module attached to the special watch is used to capture the pictures of the surroundings when the panic mode is on. The camera will turn on only if the SOS button is pressed. The camera consists of a lens which focuses light from the scene and it is this picture that is send to the parent’s app. Here, there is a 2.0 MP camera which helps you to take stunning pictures. The camera is capable of 2592 x 1944 pixel static images, and also supports 1080p30 and 720p60. Here the parent is referred to as the remote user. They will be the one who is receiving the GPS coordinates and the image of the panic situation via notifications to the corresponding application. When the SOS button is pressed the GPS coordinates and the background images of the student are sent to the parent’s app.
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An Android based children tracking system using voice recognition was published as an international journal of computer science and information Technology . The tracking system focuses on the security of every child in the school. It also includes a cry sensing system along the child module. The system mainly constitutes of 2 receiver modules and one child module. GPS, GSM and voice recognition module comprises a child module and the receiver modules are placed at the parent’s android phone and one at the school control system. At a panic situation, i.e., when the button pressed or when the child cries then a message containing the latitude and longitude is send to parent’s mobile via text message and the content is also updated onto the school database.
A multipurpose child tracking system design and implementation was designed in which the system consists of two modules; parent module and child module.When a violation of child safe is detected, a specific sensor in child module will produce a signal. This signal will be sent from these sensors to controller then through transmitter to parent module which will take the required decision and start the violation handling procedure. The parent can set the system to work indoor or outdoor and depending on this selection the parent module can calculate the distance at any moment between each child and their parent.
Global Positioning System (GPS) is used for outdoor distance calculation while change amplitude of RF Signal is used for indoor distance calculation. Also, the parent can delimit the safety distance for each child and when it is overtaken the system will alarm both of them the parent and child. The system periodically receives messages and in response send messages to the parent module and alert them if the child is in danger. Also it contains sensor driving circuits, GPS, PIC, Transceiver, Buzzer, LCD and Keypad and it works only with internet connectivity. But the system is costly to implement and design very complex.
Global positioning system (GPS), Global system for mobile communication (GSM), Voice playback circuit and the receiver module includes Android mobile device in parent’s hand and the other as monitoring database in control room of the school. Finally, implementation results for the proposed system are provided in this paper. The proposed system includes tracking the child’s movement to and from school. The information pertaining to missed child is sent to control room of the school as well as to their respective parents, if they move beyond the coverage area.
The GPS receiver module that is being worn by the child is continuously receiving the signals from the satellites. These satellites are located in the sky and continuously send data down to earth over respective RF frequencies.GPS receivers have tiny processors and antennas that directly receive the data sent by the satellites and compute the position and time. The receiver module contains an SOS button that triggers the panic mode when pressed.
On activation of the panic mode, the camera attached to the watch clicks the pictures of the surroundings and the GPS module collects the location coordinates of the student and transfer the same to the parent app and to the official numbers that are saved in the child app. Before sending these details to the parent app and to the official numbers, these information are saved in the database of the server. Also, there exist a provision for the child to send a pre-alert message to the parent incase if he/she feels any sort of insecurity.
This paper proposes an android based solution to aid parents to track their children in real time under anticipation of danger. The speculative model and its congruous functioning is being discussed in this section. On activation of the panic mode, the camera attached to the watch clicks the pictures of the surroundings and the GPS module collects the location coordinates of the student and transfer the same to the parent application and to the official numbers that are saved in the child application.
Initially, the SOS button is not active.
When the student feels any sort of insecure feelings he/she can press the SOS button.
So, here the status of the button is always checked.
When the button is pressed, the GPS module and the camera module will turn on.
The GPS coordinates and the background image of the student’s surroundings are captured within a delay of approximately five seconds.
The data will be sent to the parent via a notification to the parent’s app.
Child tracker ( )
// child side ( )
E_no = get the emergency number // initialize emergency
number to E_no.
O_n1 = get the number of first official
O_n1 = get the number of second official // initialize
official numbers to O_n1, O_n2.
Loc = get the GPS co-ordinates // initialize the GPS coordinates
Image = capture the image // initialize the captured image
On click (SOS Button)
Display ( Loc, Image) // display location and image on
E_no and location on O_n1 and O_n2.
Call ( E_no) // call to the emergency number.
On click (prealert)
Display (loc)// display location on E_no.
No = Enter the parent number // initialize the parent
number to No.
Display (loc, image) // display location and image on
E_no and location on O_n1 and O_n2.
The developed prototype is attached to a watch. This special watch implements the use of real time system. As soon as the student presses the SOS button, his GPS coordinates and the distress image is sent to the specified app of the parent. The return information message sent to the parent is an added advantage so that even if the parent is offline, they will receive text message. In future this proposed methodology can be enhanced by replacing the watch by a more sophisticated system. The components can be assembled in the school ID or any other portable item. In future the proposed methodology is to be modified by introducing the automatic attendance-uploading feature, immediate result updating, sending assignments and project details to the smart school bag and many others.
 M.Navya, et.al , “ Android based children tracking system using voice recognition”, International journal of Computer science and information technology,Vol 4 (1): pages 229-235, Jan 2015.
 International Journal of Soft Computing Applications ISSN: 1453-2277 Issue 4 (2009), “A Multipurpose Child Tracking System Design and Implementation.“
 K.Vidyasagar, G. Balaji, K. Narendra Reddy, “RFID-GSM imparted school children security system”, Foundation of computer science FCS, NewYork, USA: Volume 2 June 2015.
 J.Saranya,J.Selvakumar,” Implementation of children tracking system on android mobile terminals“,16 August 2013.