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Sniffer

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Stelcy Jose

The document describes a sniffer device that can detect and locate lost mobile phones. The sniffer works as a small base station that operates at a different frequency than mobile networks. It uses the phone's unique IMEI number to identify lost phones within range. The sniffer is designed with a small transceiver, directional antenna, and software to store IMEI numbers and track locations. When activated, it scans for lost phones by number and uses GPS to pinpoint their location for recovery. While not perfect, the sniffer provides an effective and low-cost solution for finding lost mobiles at a large scale.

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Snifferfor detecting lost mobile By Stelcy Jose
What Happens when you lost your Mobile Phone?
ReportingSearching Praying
But still not found?
What is the best Solution then?
What is the best Solution then?What is the best Solution then? Sniffer
What Sniffer actually has?
Sniffer has?Sniffer has? Small Base Station Plays major role Transceiver section operated at frequency (different) Directional antenna Includes:
contentscontents Introduction About IMEI Designing for the Sniffer -Sniffer base station -Design of unidirectional antenna -software for the tracking Working of the sniffer device conclusion
What is Sniffer ?What is Sniffer ? The main scope is to detect the lost mobiles. For the detection of lost mobile SNIFFER plays a vital role. The Sniffer is basically a transceiver that works in the different frequency that we are commonly used. The sniffer device has to be designed for easy mobility for the purpose of detection.
What is IMEI?(International Mobile Equipment Identifier)
International Mobile Equipment Identifier 15 digit Unique code used to identify GSM phone Used for blocking of call made by unauthorized person When a phone is switched on, this unique IMEI number is transmitted and checked against a data base of black listed phones in the networks EIR . To know the IMEI number the *#06# has to be pressed. We use IMEI EFFECTIVELY in SNIFFER For the purpose of DETECTON
Gray List Allow the Phone to be used, but can be tracked to see who has it. Black List Listing the phone from being used on any number where there is an EMI match
1. Sniffer base station.1. Sniffer base station. 2. Unidirectional antenna.2. Unidirectional antenna. 3. Tracking software.3. Tracking software. DESIGNING FOR THE SNIFFERDESIGNING FOR THE SNIFFER
Designing for the Sniffer - Sniffer Base Station Small base station Include transceiver section Operated at frequency (900mhz which is VHF range)it is necessarily to design the oscillator circuit for that frequency range Important is cooling Low power transmitter (help in nature)
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)
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
Designing for the Sniffer - S/W for the Tracking RAM IMEI Number Lost mobile Signalling information Programming done-c/java Front end-VB Back end- oracle SQL i/p checks s/w got
If the connection of the lost mobile is Established with the BTS, The MSC collects its IMEI number. If these number are matched with the reported lost nos . It transferred the connection to the sniffer device. Searching can perform with the GPS system for more accurate , fast detection and location can be tracked. WORKING OF THE SNIFFER DEVICE
Before Sniffer Increase The Frequency
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) The connection of the sniffer device with the lost mobile phone.
Sniffer tries to Communicate with the Lost Mobile The sniffer shown in fig tries to communicate with the lost mobile. After getting connected with the mobile it creates a virtual cell pattern and thus helps in the detection of lost mobile phones.
Is browser sniffing the only viable approach for mobile device detection?
Useful for lost mobile effective cost low power consumption easy to design ADVANTAGES
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 Certain boundaries :Certain boundaries :
Conclusion
IntodayslifeMobilephonesarethemainlyuseddevicefor communication,solargeno.ofcomplaintsregardingthemobile phonethatlostarecomes. Thismethodappearstobecomplexbutforlargescaledetection theoveralleffectivecostofthedesigndown. There are certain boundary conditions like the power of the mobile should be good enough etc.. but this method can be improvedbyusingmoderntechnologies.
THAN Q

More Related Content

Sniffer

  • 1. Snifferfor detecting lost mobile By Stelcy Jose
  • 2. What Happens when you lost your Mobile Phone?
  • 4. But still not found?
  • 5. What is the best Solution then?
  • 6. What is the best Solution then?What is the best Solution then? Sniffer
  • 8. Sniffer has?Sniffer has? Small Base Station Plays major role Transceiver section operated at frequency (different) Directional antenna Includes:
  • 9. contentscontents Introduction About IMEI Designing for the Sniffer -Sniffer base station -Design of unidirectional antenna -software for the tracking Working of the sniffer device conclusion
  • 10. What is Sniffer ?What is Sniffer ? The main scope is to detect the lost mobiles. For the detection of lost mobile SNIFFER plays a vital role. The Sniffer is basically a transceiver that works in the different frequency that we are commonly used. The sniffer device has to be designed for easy mobility for the purpose of detection.
  • 11. What is IMEI?(International Mobile Equipment Identifier)
  • 12. International Mobile Equipment Identifier 15 digit Unique code used to identify GSM phone Used for blocking of call made by unauthorized person When a phone is switched on, this unique IMEI number is transmitted and checked against a data base of black listed phones in the networks EIR . To know the IMEI number the *#06# has to be pressed. We use IMEI EFFECTIVELY in SNIFFER For the purpose of DETECTON
  • 13. Gray List Allow the Phone to be used, but can be tracked to see who has it. Black List Listing the phone from being used on any number where there is an EMI match
  • 14. 1. Sniffer base station.1. Sniffer base station. 2. Unidirectional antenna.2. Unidirectional antenna. 3. Tracking software.3. Tracking software. DESIGNING FOR THE SNIFFERDESIGNING FOR THE SNIFFER
  • 15. Designing for the Sniffer - Sniffer Base Station Small base station Include transceiver section Operated at frequency (900mhz which is VHF range)it is necessarily to design the oscillator circuit for that frequency range Important is cooling Low power transmitter (help in nature)
  • 16. 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)
  • 17. 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
  • 18. Designing for the Sniffer - S/W for the Tracking RAM IMEI Number Lost mobile Signalling information Programming done-c/java Front end-VB Back end- oracle SQL i/p checks s/w got
  • 19. If the connection of the lost mobile is Established with the BTS, The MSC collects its IMEI number. If these number are matched with the reported lost nos . It transferred the connection to the sniffer device. Searching can perform with the GPS system for more accurate , fast detection and location can be tracked. WORKING OF THE SNIFFER DEVICE
  • 20. Before Sniffer Increase The Frequency
  • 21. 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) The connection of the sniffer device with the lost mobile phone.
  • 22. Sniffer tries to Communicate with the Lost Mobile The sniffer shown in fig tries to communicate with the lost mobile. After getting connected with the mobile it creates a virtual cell pattern and thus helps in the detection of lost mobile phones.
  • 23. Is browser sniffing the only viable approach for mobile device detection?
  • 24. Useful for lost mobile effective cost low power consumption easy to design ADVANTAGES
  • 25. 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 Certain boundaries :Certain boundaries :