1. What is Sniffer and how does it work for
detecting lost mobile and its use
-Hrullekha Kodali

2. What is Sniffer? What is sniffer? IMEI Sniffer Based Station
Unidirectional Antenna
Tracking S/W
Uses and certain boundaries

3. operated at frequency (different)
What Sniffer actually has?
Small Base Station
Includes:
Transceiver section
operated at frequency (different)
Directional antenna
Plays major role

4. International Mobile Equipment Identifier
What is IMEI?
International Mobile Equipment Identifier
Unique number
Used for blocking of call made by unauthorized person
15 digit unique code
identify-GSM/DCS/PCM
check EIR

5. Design Of Unidirectional Antenna
Designing for the Sniffer - Design Of Unidirectional Antenna
Act as a eyes for the sniffer
Antenna is a device works at specified frequency
Transmitting & receiving data signal
Transmit power
Used to show radiation pattern
(Unidirectional Antenna Radio Pattern)

6. Designing for the Sniffer - Sniffer Base Station
Small base station
Include transceiver section
Operated at frequency (900mhz which is VHF range)
OSCILLATOR circuit-for frequency range
Important is cooling
Low power transmitter (help in nature)

7. Designing for the Sniffer - S/W for the Tracking
Feature: help to create database using RAM
IMEA - embedded in a chip
RAM stores - IMEI no.
Act as a database

8. Designing for the Sniffer - S/W for the Tracking Signaling information
RAM
Signaling information
s/w got
checks
IMEI Number
i/p
Programming done-c/java
Back end- oracle SQL
Front end-VB
Lost mobile

9. Working of a Sniffer Device
Sniffer works as a transceiver
BTS (Base Transceiver Station) - Act as a middle man
MTSO (Mobile Telephone Switching office) = MSC(Mobile Switching Centre)

10. Before and After Sniffer Increase The Frequency
IMEI no. provided by MTSO or MSC
BTS(base transceiver station)-act as a middle man
MTSO(mobile telephone switching office)=MSC(mobile switching centre)

11. Sniffer tries to Communicate with the Lost Mobile

12. ADVANTAGES Uses: Useful for lost mobile effective cost
low power consumption
easy to design
Certain boundaries :
Power of mobile should be good enough
mobile should not been in shadow regain
References
seminarprojects.org/q/ppt-detection-of-lost-mobile-using-imei-number
ADVANTAGES

13. Thank You