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| '''IFF''' is an acronym for ''Identification Friend or Foe'', a transponder-based system of spacecraft identification, used to distinguish friendly from enemy craft.
| | <b>Meaning:</b> Identification Friend or Foe |
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| The [[Cylon transponder]]s found on ''Galactica'' contain IFF technology and are used by the crew in clandestine approaches to Cylon strongholds {{TRS|Kobol's Last Gleaming, Part II}}. | | A transponder-based system of aircraft identification, used to distinguish friendly craft from enemy craft. |
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| | The system essentially uses a "Question and Answer" routine between one aircraft and another. A correct response leads to the questioned aircraft being identified as friendly. In this respect, IFF can be considered a [http://en.wikipedia.org/wiki/Challenge-response_authentication Challenge-response Authentication system]. |
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| | The interrogation process is undertaken automatically, with no direct pilot / operator intervention necessary. |
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| | IFF systems can also be incorporated into missile and or defence systems, thus preventing them from firing on / acquiring "friendly" targets. IFF transponders may also be fitted to civilian aircraft for the same reason. |
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| Colonial civilian and military ships, such as {{RDM|Viper}}s and [[Raptor]]s, also have transponders. The civilian ships likely use civilian transponders used for commercial passenger flight, but are now recognized by ''Galactica'' as part of its Fleet. The [[Blackbird]] was likely not equipped with a transponder (or the transponder is disabled as part of its function), which almost leads to it being attacked by other Vipers whose pilots mistake its questionable [[DRADIS]] signature as a Cylon target after the stealth fighter returns from a reconnaissance mission {{TRS|Resurrection Ship, Part II}}.
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| == Notes ==
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| *Real life IFF systems use an automated and encrypted "question and answer" routine between one aircraft and another. A correct response leads to the questioned aircraft being identified as friendly. In this respect, IFF can be considered a [[Wikipedia:Challenge-response authentication|challenge-response authentication system]]. However, an aircraft not replying is not automatically designated as a foe, since there may be legitimate reasons for that, such as battle damage or outdated encryption keys.
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| *IFF systems can also be incorporated into missile and or defense systems, preventing them from acquiring friendly and firing on friendly targets and thus prevent friendly fire incidents.
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| ==See Also==
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| *[[List of terms (RDM)|List of terms in the Re-imagined Series]]
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| ==External Links== | | ==External Links== |
| * [http://www.globalsecurity.org/military/systems/aircraft/systems/iff.htm IFF on GlobalSecurity.org]
| | [http://www.globalsecurity.org/military/systems/aircraft/systems/iff.htm Global Security Org] |
| * {{ext-wikipedia|article=Identification friend or foe|IFF}}
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| [[Category:A to Z]] | | [[Category:A to Z]] |
| [[Category:RDM]]
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| [[Category:Technology]]
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| [[Category:Technology (RDM)]]
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| [[Category:Terminology]] | | [[Category:Terminology]] |
| [[Category:Terminology (RDM)]] | | [[Category:Weapons]] |
