Sniffer for detecting lost mobiles

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This presentation is created upon mobile sniffers. These mobile sniffers can be used to detect lost mobile phones
This presentation gives the details about the procedure of sniffers functionality and the tools used in producing the device

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Sniffer for detecting lost mobiles

  1. 1. Visvesvaraya Technological University Jnana Sangama, Belgaum Seminar On SNIFFERS Under the guidance of By, Department of Information Science and Engineering Rajiv Gandhi Institute of Technology Cholanagar, R T Nagar Post, Bangalore-32
  2. 2. SNIFFER FOR DETECTING LOST MOBILE PHONES Presented by,
  3. 3. CONTENTS • Introduction • What sniffer is ? • IMEI • Designing for the sniffer  Sniffer base station  Unidirectional Antenna  Software Tracking • Working of sniffer device • Advantages • Conclusion • References DEPT OF ISE RGIT,B'LORE 3
  4. 4. INTRODUCTION • The main scope 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 from making and receiving the calls has been done by the manufacturers of the mobile with the help of IMEI number. DEPT OF ISE RGIT,B'LORE 4
  5. 5. CONT’D…. • 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 . DEPT OF ISE RGIT,B'LORE 5
  6. 6. What a SNIFFER is? • The sniffer is basically a transceiver that works in the frequency which is in the special unused range that is operated by the service provided or it can designed to operate at a frequency that is of much different frequency than the one that is being used. DEPT OF ISE RGIT,B'LORE 6
  7. 7. INTRODUCTION TO IMEI • Each mobile device has a globally unique IMEI (International Mobile Equipment Identity) • IMEI (International Mobile Equipment Identity) numbering system is a 15 digit 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 DEPT OF ISE RGIT,B'LORE 7
  8. 8. CONT’D…. • 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 network’s EIR • Grey listing will allow the phone to be used, but it can be tracked to see who has it (via the SIM information). • Black listing the phone from being used on any network where there is an EIR match. DEPT OF ISE RGIT,B'LORE 8
  9. 9. DESIGNING FOR THE SNIFFER • The sniffer device can be called as a mobile base station that includes the following important components:  Sniffer base station  Unidirectional antenna  Tracking software DEPT OF ISE RGIT,B'LORE 9
  10. 10. SNIFFER BASE STATION • The sniffer is a small base station, it 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. DEPT OF ISE RGIT,B'LORE 10
  11. 11. UNIDIRECTIONAL ANTENNA • 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. DEPT OF ISE RGIT,B'LORE 11
  12. 12. DEPT OF ISE RGIT,B'LORE 12 RADIATION PATTERN
  13. 13. SOFTWARE FOR THE TRACKING • 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 preferred as it is easily embedded with the chips. DEPT OF ISE RGIT,B'LORE 13
  14. 14. WORKING OF SNIFFERS • The working of sniffers is of two phases Before Sniffer increases the frequency After Sniffer increases the frequency DEPT OF ISE RGIT,B'LORE 14
  15. 15. BEFORE SNIFFER INCREASES THE FREQUENCY DEPT OF ISE RGIT,B'LORE 15
  16. 16. AFTER SNIFFER INCREASES THE FREQUENCY DEPT OF ISE RGIT,B'LORE 16
  17. 17. EXPLANATION • From the above figure we have clearly observed the racing of the lost mobile. • We have identified the lost mobile using IMEI. But, • The location where it is present can be known by seeing at the output of the software. DEPT OF ISE RGIT,B'LORE 17
  18. 18. ADVANTAGES • This method is used for finding the lost mobiles effectively • Cost effective • low power consumption • Easy to design DEPT OF ISE RGIT,B'LORE 18
  19. 19. CONCLUSION • There are certain boundary conditions that have to be qualified for the identification of lost mobile like the power of the mobile should be good enough, the mobile phone should not be in the shadow region but however this method using modern technologies and devices. DEPT OF ISE RGIT,B'LORE 19
  20. 20. REFERENCES • Schiller, “Mobile Communication”, Pearson Education 1 Edition, 7th reprint -2003. • John D Kraus, “Electromagnetic”, TMH • Jordan et al, “Electromagnetic waves and radiation system” , Printice Hall • www.gsmworld.com • http://ericsson.com DEPT OF ISE RGIT,B'LORE 20
  21. 21. DEPT OF ISE RGIT,B'LORE 21
  22. 22. DEPT OF ISE RGIT,B'LORE 22

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