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{{Era| | {{Era|Human|UNSC|HCW}} | ||
{{Ratings}} | {{Ratings}} | ||
[[ | [[File:IFFtags.jpg|thumb|IFF tags identifying UNSC soldiers]] | ||
'''Identification | '''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 sensor]].<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. | ||
In the ''[[Halo 2]]'' level, ''[[Gravemind (level)|Gravemind]]'', [[John-117]] managed to rescue a dozen UNSC | In the ''[[Halo 2]]'' level, ''[[Gravemind (level)|Gravemind]]'', [[John-117]] managed to rescue a dozen UNSC prisoners of war. This was due to [[Cortana]] identifying their "IFF transponders", which were still with the Marines. | ||
Most UNSC ships, ranging from civilian [[ | 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> | ||
==Sources== | ==Sources== | ||
<references/> | <references/> | ||
[[Category:UNSC technology]] | [[Category:UNSC technology]] |