II.WORKING
The application makes use of a mobile phone or PDA which is provided with GPS receptor and GSM network. This
application enables the user (a) to track a mobile device and send alerts messages to a predefined number via short
message service (SMS) if the mobile device is not present in the specified radius or in an interest location radius (b) to
send distressed calls to a predefined number via SMS by just pressing one key from the keypad (c) for detecting an
unauthorized SIM card in the mobile phone and to send a warning message via SMS from the current GSM cell and
GPS position. mTracker also maintains a record of the positions which are already monitored. This allows the users to
check when and where the mobile device was located using Google maps. The application uses two user profiles the
administrator and the user to be tracked.