[9]

Cell phones cannot be used in all the areas where it may result disturbing others or creating a serious disaster. Hence a Wireless jammer is designed which is used to avoid the usage of cell phones in such areas. The main significance of this model is that the system is flexible and does not interfere or collapse the signal received from the base station so that the calls or messages intended for the mobile is received but cannot be attended. That is, the system disables the microphone, loud speaker and keypad in the mobile. The jammer effectively disables cellular phones. When the ignition in the jammer unit goes ON, an RF signal is encoded and passed through RF transmitter to the RF receivers in the mobile unit and the message is decoded. As soon as Mobile unit receives the Signal it locks the Microphone, Speaker and the keypad of the smart phone. The user is still notified about the calls and the messages are received