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{{Era|Human|UNSC|HCW|Post}}
{{Status|Canon}}
[[File:IFFtags.jpg|thumb|IFF tags identifying UNSC soldiers.]]
[[File:IFFtags.jpg|thumb|IFF tags identifying UNSC soldiers.]]


'''Identification friend or foe''', or '''IFF''', is a system used by the [[UNSC]] to tag friendly or hostile units for easy identification on a [[heads-up display]] or [[motion tracker]].<ref>'''[[wikipedia:Identification friend or foe|IFF at Wikipedia]]'''</ref><ref>'''Halo: Contact Harvest''', ''page 178''</ref> The equipment of a friendly unit generates a signal on a specific frequency, which is interpreted as a "friendly" signal by the receiver. If a signal is not generated, then unit is tagged as a hostile. Friendly units appear as yellow dots on the motion tracker, while the crosshairs of a HUD turn green when pointed at them. Hostile units show up as red on a motion tracker, and the HUD crosshairs turn red.
'''Identification friend or foe''', or '''IFF''', is a system used by the [[UNSC]] and [[Covenant]] to tag friendly or hostile units for easy identification on a [[heads-up display]] or [[motion tracker]].<ref>'''[[wikipedia:Identification friend or foe|IFF at Wikipedia]]'''</ref><ref>'''Halo: Contact Harvest''', ''page 178''</ref> The equipment of a friendly unit generates a signal on a specific frequency, which is interpreted as a "friendly" signal by the receiver. If a signal is not generated, then unit is tagged as a hostile. Friendly units appear as yellow dots on the motion tracker, while the crosshairs of a HUD turn green when pointed at them. Hostile units show up as red on a motion tracker, and the HUD crosshairs turn red.


All UNSC personnel are implanted with a [[neural interface]] containing an IFF transponder.<ref>'''Halo: Mortal Dictata''', ''page 292''</ref> Additionally, most UNSC ships, ranging from civilian [[freighter]]s to [[UNSC Navy]] [[warships]], possess IFF transponders displaying their identity, allegiance, and classification.<ref>'''Halo: Contact Harvest''', ''page 176''</ref>
All UNSC personnel are implanted with a [[neural interface]] containing an IFF transponder.<ref>'''Halo: Mortal Dictata''', ''page 292''</ref> Weapons like the [[MLRS-2 Hydra]] use an integrated IFF interrogator in its targeting systems to prevent friendly units from being targeted by the guidance system.{{Ref/Game|HI|In-game Hydra weapon|Detail=[[:File:HINF HydraIFF.png|Decal details]]}} Additionally, most UNSC ships, ranging from civilian [[freighter]]s to [[UNSC Navy]] [[warships]], possess IFF transponders displaying their identity, allegiance, and classification.<ref>'''Halo: Contact Harvest''', ''page 176''</ref>


During the [[Fall of High Charity|fall of High Charity]], [[John-117]] managed to rescue several [[UNSC Marine]] [[Prisoner of war|prisoners of war]]. This was due to [[Cortana]] identifying their IFF transponders, which were still with the Marines.<ref>'''[[Halo 2]]''', campaign level ''[[Gravemind (level)|Gravemind]]''</ref>
During the [[Fall of High Charity|fall of High Charity]], [[John-117]] managed to rescue several [[UNSC Marine]] [[Prisoner of war|prisoners of war]]. This was due to [[Cortana]] identifying their IFF transponders, which were still with the Marines.<ref>'''[[Halo 2]]''', campaign level ''[[Gravemind (level)|Gravemind]]''</ref>
Following the [[Human-Covenant War|fall]] of the Covenant, the [[Swords of Sanghelios]] and [[Jul 'Mdama]]'s [[Jul 'Mdama's Covenant faction|Covenant]] utilized "semi-feral" associated intelligences to operate {{Pattern|Upisa'weri|Shrike}} turrets. As these constructs had been long abandoned, they could not communicate with modern [[Sangheili]] and had to be carefully monitored and locked down prior to activation due to their inability to understand contemporary IFF systems and codeword usage.<ref>[https://www.halowaypoint.com/en-us/universe/weapons/shrike-turret '''Halo Waypoint''': ''Shrike Turret'']</ref>


==List of appearances==
==List of appearances==
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*''[[Halo 5: Guardians]]''
*''[[Halo 5: Guardians]]''
*''[[Halo: Shadow of Intent]]''
*''[[Halo: Shadow of Intent]]''
*''[[Halo: Silent Storm]]''
*''[[Halo Infinite]]''


==Sources==
==Sources==
<references/>
{{Ref/Sources}}
 
[[Category:Communications technology]]
[[Category:Communications technology]]

Latest revision as of 03:44, September 11, 2023

IFF tags identifying UNSC soldiers.

Identification friend or foe, or IFF, is a system used by the UNSC and Covenant to tag friendly or hostile units for easy identification on a heads-up display or motion tracker.[1][2] The equipment of a friendly unit generates a signal on a specific frequency, which is interpreted as a "friendly" signal by the receiver. If a signal is not generated, then unit is tagged as a hostile. Friendly units appear as yellow dots on the motion tracker, while the crosshairs of a HUD turn green when pointed at them. Hostile units show up as red on a motion tracker, and the HUD crosshairs turn red.

All UNSC personnel are implanted with a neural interface containing an IFF transponder.[3] Weapons like the MLRS-2 Hydra use an integrated IFF interrogator in its targeting systems to prevent friendly units from being targeted by the guidance system.[4] Additionally, most UNSC ships, ranging from civilian freighters to UNSC Navy warships, possess IFF transponders displaying their identity, allegiance, and classification.[5]

During the fall of High Charity, John-117 managed to rescue several UNSC Marine prisoners of war. This was due to Cortana identifying their IFF transponders, which were still with the Marines.[6]

Following the fall of the Covenant, the Swords of Sanghelios and Jul 'Mdama's Covenant utilized "semi-feral" associated intelligences to operate Upisa'weri-pattern Shrike turrets. As these constructs had been long abandoned, they could not communicate with modern Sangheili and had to be carefully monitored and locked down prior to activation due to their inability to understand contemporary IFF systems and codeword usage.[7]

List of appearances[edit]

Sources[edit]

  1. ^ IFF at Wikipedia
  2. ^ Halo: Contact Harvest, page 178
  3. ^ Halo: Mortal Dictata, page 292
  4. ^ Halo Infinite, In-game Hydra weapon: Decal details
  5. ^ Halo: Contact Harvest, page 176
  6. ^ Halo 2, campaign level Gravemind
  7. ^ Halo Waypoint: Shrike Turret
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