 The complete system will consist of an arduino mini pro, Wi-Fi module (ESP 8266 esp 01), Led.  In prototype we are using arduino uno with an breadboard.  The complete system is controlled using android app.  The app can’t be forced stop or uninstall once installed with administrator permissions.  The smartphone will be connected to the arduino(bag) using the Wi-Fi module the smartphone gets the rssi value of arduino and calculate the distance of the smartphone from bag using this value the smartphone decide when to report the threat if the distance between bag and smartphone increases more than 3 meters it gives the alert.  If someone tries to open the chain of your bag in protected mode then the arduino in the bag detects when the two chain heads get away from each other and the circuit break and this is reported to the smartphone.