This document discusses sniffer technology used to detect lost mobile phones. It describes how a sniffer device works as a small base station with a sniffer base station component, unidirectional antenna, and tracking software. The sniffer detects lost phones by operating at a different frequency than the local cell and uses the phone's unique IMEI number for identification. Sniffer technology allows for effective and low-cost recovery of lost mobile devices.

1. ELECTRONICS AND COMMUNICATION ENGINEERING
SNIFFER TECHNOLOGY FOR MOBILES
Under the guidance of: Presented By:
Mrs. N. LAVANYA DEWKATHE DIVYA
197Z1A0424
ASSISTANT PROFESSOR

2. • Abstract
• Introduction
• IMEI
• Designing for the sniffer
1.Sniffer base station
2.Unidirectional antenna
3.Tracking software
• Working of sniffer device
• Advantages
• Applications
• Conclusion
• References
Contents

3. • For the detection of lost mobile SNIFFER plays a vital role.
• The sniffer device has to be designed precisely and size
should be reduced for easy mobility for the purpose of
detection.
• The device can be called as a mobile Base station that
includes Sniffer Base station, unidirectional antenna,
tracking software.
• The sniffer is a small base station that includes transceiver
section.
ABSTRACT

4. • The main scope of this seminar is to detect the lost mobiles.
• Each and every day thousands of mobiles get misplaced or
lost,though effective way for the blocking of the lost
mobile to prevent unauthorized person.
• To making and receiving the calls has been done by the
manfacturers of the mobile with the help of IMEI number.
• The IMEI number is a unique number that is embedded in
the mobile phone.
• If we report our loss mobile phone than it can be uses
efficiently for the detection process.
• It has three major components that Play an important role
detecting the Phone.
INTRODUCTION

5. IMEI
• IMEI - International Mobile Equipment
Identifier.
• Each mobile device has a globally unique
IMEI
• IMEI numbering system is a 15 digits
unique code that is used to identify the
GSM phone
• To know the IMEI number the *#06# has
to be pressed, the number will be
displayed in the LCD screen

6. • When a phone is switched on, this unique IMEI number is
transmitted and checked against a data base of black listed or grey
listed phones in the networks EIR.
• Grey listing will allow the phone to be
used, but it can be tracked to see who
has it(via the sim information).

7.  The sniffer device can be called as a mobile station that
includes the following important components.
1.Sniffer base station
2.Unidirectional antenna
3.Tracking softwear
DESIGNING FOR THE SNIFFER

8. • The sniffer is a small base station, includes transceiver section
• It should operate at a frequency that is much different from the
frequency of the current cell in which the operation of detection is
being carried out.
1. SNIFFER BASE STATION

9. • The directional antenna acts as the eyes for the sniffer for the
purpose of the detecting the lost mobile phones
• Antenna is a device which works at specified frequencies range for
transmitting or receiving the data signal
• In general, antennas transmit power depending on lobe pattern
which varies from one antenna to the other
2. UNIDIRECTIONALANTENNA:

11. • The software is used for the tracking of the lost mobile phone
• The programming is done with
C or Java. However the C is most
preffered as it is easily embedded
with the chips
3. SOFTWARE FOR THE TRACKING

12. WORKING OF THE SNIFFER DEVICE:
• The working of sniffers is of two phases
• Before sniffer increases the frequency
• After sniffer increases the frequency
Before and After sniffer increases the frequency

13. ADVANTAGES
• This method is used for finding the lost mobiles effectively
• Cost effective
• Low power consumption
• Easy to design

14. APPLICATIONS
• Widely used in crowded places where there is a chance of loosing the
device
• Can also used to get the GPS Location of device with surrounding
images and videos
• Application has a feature of remotely changing the ringer mode that
can also be done.

15. CONCLUSION
• The idea of development “Sniffer for the detection of lost Mobile
phones” paves a way by means of which the lost mobile phones can
be recovered.
• Let all of us hope for the advancement of the technology in this
domain.
• Which will be very helpful for each and every persons who are lost
mobiles.

16. REFERENCES
• R.S. Satya Sri Ambica, P. Padma Priya, Dr.N.Srinivasu, “Sniffer Technology for
Mobiles'', International Journal of Engineering Trends & Technology, volume 4,
issue 4-April 2013.
• Puthiyavan, U. “Enhancing User Privacy-Location Based Search Using
MEMD”, IEEE International Conference on Portable Information Devices 2007,
May 2007, Pp-1-5
• Jordan et al, “Electromagnetic waves and radiation systems”, Printice Hall