Snifferfor detecting lost mobile

By Asmita TararAmravati

What Happens when you lost your Mobile Phone?

Reporting…Searching… Praying…

But still not found?

What is the best Solution then?

What is the best Solution then?

Sniffer

What is Sniffer?• Precise• Small Size• Mobile Base Station• Unidirectional Antenna• Tracking S/W

What Sniffer actually has?

What Sniffer actually has? Small Base Station

Plays major role

Transceiver section

operated at frequency (different)

Directional antenna

Includes:

What is IMEI?(International Mobile Equipment Identifier)

What is IMEI?I n t e r n a ti o n a l M o b i l e E q u i p m e n t I d e n ti fi e r

• Unique number

• Used for blocking of call made by unauthorized person

• 15 digit unique code

• identify-GSM/DCS/PCM

• check EIR

What is IMEI?I n t e r n a ti o n a l M o b i l e E q u i p m e n t I d e n ti fi e r

If EIR & IMEI matched

NETWORKS CAN DO NO. OF THINGS

TO KNOW IMEI NUMBER DIAL *#06#

BUT, We use IMEI EFFECTIVELY in SNIFFERFor the purpose of DETECTON

Gray ListAllow the Phone to be used, but can be tracked to see who has it.

Black ListListing the phone from being used on any number where there is an EMI match

Designing for the Sniffer1.SNIFFER BASE STATION2.UNIDIRECTIONAL ANTENNA3.TRACKING S/W

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)

Sniffer Base StationDesigning 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)

S/W for the TrackingDesigning 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

S/W for the TrackingDesigning for the Sniffer - S/W for the Tracking

RAM

IMEI Number

Lost mobile

Signaling information

Programming done-c/java

Front end-VB

Back end- oracle SQL

i/pchecks

s/w got

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)

Before Sniffer Increase The Frequency

After Sniffer Increase The Frequency

IMEI no. provided by MTSO or MSCBTS(base transceiver station)-act as a middle man

MTSO(mobile telephone switching office)=MSC(mobile switching centre)

Sniffer tries to Communicate with the Lost Mobile

Is browser sniffing the only viable approach for mobile device

detection?

ADVANTAGES• Useful for lost mobile• effective cost• low power consumption • easy to design

ConclusionCertain boundaries :• Power of mobile should be good enough• mobile should not been in shadow regain

Note: “Method can been improved by using modern technology and devices”

Thank You