Cell phone detector / Azrie Adl Abu Bakar & Alif Syazwan Hasban

As increase in the technology in the world using the electronic equipment are being used in a wrong way like, in the examination halls and confidential rooms. To avoid this we are introducing a project called CELLPHONE DETECTOR. The unit will give the warning indication if someone making calls or receive calls and uses Mobile phone within a radius of 1.5 meters. This handy, pocket-size mobile transmission detector or sniffer can sense the presence of an activated mobile cell phone from a distance of one and-a-half meters. So it can be used to prevent use of mobile phones in examination halls, confidential rooms, etc. The circuit can detect the incoming and outgoing calls even if the mobile phone is kept in the silent mode. The moment the Bug detects RF transmission signal from an activated mobile phone, it starts sounding the buzzer and the LED blinks and the LCD display will turn on. It continues until the signal transmission ceases. Cell phones are used in good way and also in a bad way. When the class is going on, students intend to use their cell phones and not listening to what is being taught. These days, students are also carrying their cell phones to the examination halls to copy which would help them to get good marks. To avoid this problem, the cell phone detector is introduced.