Cell Phone Jammer

1. CCeellll PPhhoonnee JJaammmmeerr
PPrreesseenntteedd bbyy::--
AAbbhhiisshheekk GGuuppttaa
0077//EECCEE//003344

2. CCoonntteennttss
• What it is?
• Is it useful?
• How it can be destructive?
• How do they work?
• Some quick numbers?
• Development over time
• Can anyone have it for personal use?
• Conclusion
• References and bibliography

3. WWhhaatt iiss iitt??
Cell phone
jamming is the use
of an electronic
device to prevent
the transferring of
data through a
wireless phone

4. iiss JJaammmmiinngg uusseeffuull??
Jammers can be used practically
anywhere
Jammers are used primarily where silence
is necessary or data transfer might be
destructive
Jammers are simple to build and use

5. Why might cell phone use
be destructive?
As wireless phones rapidly overtook society in the 21st
century, many problems arose with the quick, easy
option to transfer data either by voice or files through
them such as : Espionage, Exposure of images,
Recording conversation or video remotely, Cheating
(Academically), etc.

6. hhooWW ddoo tthheeyy WWoorrkk??
Jammers simply overflow
the frequency used by
wireless phones with
radio waves
Enough interference
caused by these waves
will prevent
communication between
a wireless phone and a
base tower

7. Some Jammers are small,
hand-held sized devices
while others can be very
large
Smaller Jammers interfere
mostly with the wireless
phones themselves while
devices with larger radii may
interfere with the towers
directly

8. ssoommee QQuuiicckk nnuummbbeerrss……
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SSmmaallll JJaammmmeerrss bblloocckk aallll
ccoommmmuunniiccaattiioonn iinn tthhiiss rraannggee ffoorr aa 3300
fftt rraaddiiuuss
CCoommmmeerrcciiaall ssiizzee JJaammmmeerrss ccaann bblloocckk
aallll ccoommmmuunniiccaattiioonn ffoorr 55 mmiilleess

9.  Originally much of the technology associated with jamming was
developed for military purposes
 A huge part of security in the military is data security; Jamming
communications signals locally can prevent the loss of data
 Some Law Enforcement agencies use Jammers to prevent
criminals from communicating
 Law Enforcement and Military both use Jammers for preventing
signals from certain kinds of remote explosive detonation devices

10. DDeevveellooppmmeenntt oovveerr
ttiimmee
• Jammers originally worked on
analog signals
• Eventually Jamming was necessary
on digital networks
• Newer Jammers will block AMPS,
iDEN, and GSM networks

11. CCaann ii hhaavvee oonnee??
• OOff ccoouurrssee nnoott ((lleeggaallllyy))!! JJaammmmeerrss aarree hhiigghhllyy iilllleeggaall
ttoo cciivviilliiaannss
• WWoorrllddwwiiddee tthheeyy aarree uusseedd iinn LLiibbrraarriieess,, BBaannkkss,,
PPrriissoonnss,, HHoossppiittaallss,, CChhuurrcchheess,, MMoovviiee tthheeaatteerrss,,
aanndd ootthheerr ppllaacceess wwhheerree llooccaallss oorr ggoovvtt.. hhaavvee
ddeeeemmeedd wwiirreelleessss pphhoonnee uussee mmoorree ooff aa pprroobblleemm
tthhaann aa pplluuss

12. CCoonnCClluussiioonnss
A cell phone jammer can be very helpful in
the reduction of crime rate cause by the
misuse of cell phone.
Government, Military, Multinational
organization, institution etc., can check their
information leakage through the use of
jammers.
Proper use of it have lots of benefits but
misuse of jammer can have very destructive
results.

13. References & Bibliography
 http://electronics.howstuffworks.com
/cell-phone-jammer.htm
 www.phonejammer.com
 http://en.wikipedia.org/wiki/Mobile_
phone_jammer
 www.jammers.in