History Main / TwoKeyedLock

4th Jul '17 10:22:22 AM TRN
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** Some machines feature increasing sophisticated sensors to prevent the operator from bypassing the two hand start, which may include interrupted beam optical sensors(defeated by broomstick handles), capacitive finger buttons(hotdogs), and anti-tiedown logic(usually not worth defeating, but sometimes jumped out inside the panel).
14th Apr '17 2:19:22 AM JackG
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* ''Film/Godzilla2014''. A nuclear weapon on the deck of a naval vessel is armed via this trope, which along with the [[EverythingsBetterWithSpinning spinning cogs]] and countdown clock is presumably for RuleOfDrama rather than realism.
28th Mar '17 6:00:11 PM cluosborne
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* ''Film/SupermanIII'', to activate a satellite positioning system; although the two keys in question needed to be inserted simultaneously, not turned.

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* ''Film/SupermanIII'', to activate boot up a satellite positioning system; computer system located at a Webscoe subsidiary in Smallville called WheatKing; although the two keys in question needed to be inserted simultaneously, not turned.
19th Mar '17 11:57:34 PM tromag
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* Apparently, German libraries have a long tradition of keeping locked rooms known as the "giftschrank" (literally "poison cabinet") which contained censored writings considered to be hazardous (heretical writings in the past, Nazi literature more recently). In some libraries, the doors have dual locks with keys held by two separate staff members to ensure that only authorized people can access the works.
4th Mar '17 2:17:39 PM DarkHunter
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* Apparently, the final PowerLimiter placed upon [[PersonOfMassDestruction Hayate Yagami]] in ''Anime/MagicalGirlLyricalNanohaStrikers'' had to be removed simultaneously by [[TheBrigadier Admiral Chrono Harlaown]] and [[GoodShepherd Knight Carim]], making it a TwoKeyedLock even though they didn't have to be physically present near Hayate at the time.

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* ''Franchise/LyricalNanoha'':
** The Arc-en-Ciel superweapon in ''Anime/MagicalGirlLyricalNanohaAs'' requires two officers to activate, and special permission from the top brass for them to even carry the keys for it in the first place. Given the destruction it's capable of, this is well-warranted.
**
Apparently, the final PowerLimiter placed upon [[PersonOfMassDestruction Hayate Yagami]] in ''Anime/MagicalGirlLyricalNanohaStrikers'' had to be removed simultaneously by [[TheBrigadier Admiral Chrono Harlaown]] and [[GoodShepherd Knight Carim]], making it a TwoKeyedLock even though they didn't have to be physically present near Hayate at the time.
25th Jan '17 7:02:29 PM MiddleEighth
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[[folder: Fan Works]]
*The entrance to the white key chamber in ''Fanfic/TheKeysStandAlone: The Soft World'' is opened by two people placing their hands in two separate hand-shaped indentations, one on the floor, one on the ceiling.
[[/folder]]
23rd Jan '17 12:23:32 PM Morgenthaler
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* In the ''GearsOfWar'' novel, ''Jacinto's Remnant'', Chairman Prescott, Colonel Hoffman and somebody else had to insert three keys and turn simultaneously to activate the Hammer of Dawn technology that destroyed most of the planet. Prescott had it next to his car keys.

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* In the ''GearsOfWar'' ''VideoGame/GearsOfWar'' novel, ''Jacinto's Remnant'', Chairman Prescott, Colonel Hoffman and somebody else had to insert three keys and turn simultaneously to activate the Hammer of Dawn technology that destroyed most of the planet. Prescott had it next to his car keys.



* From the ColdfireTrilogy, the vault in which the holy relics of the failed Crusade against the Forest are stored behind a two keyed lock. The Patriarch holds one key.
* In ''[[TheGoodThiefsGuideToAmsterdam The Good Thief's Guide to Amsterdam]]'', each of three thieves keeps one of the three keys needed to open the safety deposit box that hold the fortune in diamonds that they stole. One of the three thieves hires the protagonist Charlie to steal his partners' keys.

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* From the ColdfireTrilogy, ''Literature/ColdfireTrilogy'', the vault in which the holy relics of the failed Crusade against the Forest are stored behind a two keyed lock. The Patriarch holds one key.
* In ''[[TheGoodThiefsGuideToAmsterdam The Good Thief's Guide to Amsterdam]]'', ''Literature/TheGoodThiefsGuideToAmsterdam'', each of three thieves keeps one of the three keys needed to open the safety deposit box that hold the fortune in diamonds that they stole. One of the three thieves hires the protagonist Charlie to steal his partners' keys.
23rd Jan '17 1:06:16 AM Morgenthaler
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* Used in ''VideoGame/SonicChronicles: The Dark Brotherhood'' when you had puzzles where four characters had to stand in certain spots to unlock doors.

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* ''Franchise/SonicTheHedgehog'':
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Used in ''VideoGame/SonicChronicles: The Dark Brotherhood'' when you had puzzles where four characters had to stand in certain spots to unlock doors.



* ''VideoGame/TheLegendOfZeldaFourSwords''-series has a lot of puzzles which include the "four buttons, each of them only triggers if a person is standing on it"-factor. In some of the games this is subverted by "one player controls four characters". At some places this is required to move on, at others it's just "drop a lot of loot"!

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* ''Franchise/TheLegendOfZelda'':
**
''VideoGame/TheLegendOfZeldaFourSwords''-series has a lot of puzzles which include the "four buttons, each of them only triggers if a person is standing on it"-factor. In some of the games this is subverted by "one player controls four characters". At some places this is required to move on, at others it's just "drop a lot of loot"!
23rd Jan '17 1:05:20 AM Morgenthaler
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* Used as a minigame in ''VideoGame/FinalFantasyVII'', where to open a security door three party members must push three widely separated buttons at the same time, the player only controls Cloud and has to timed their button press with Tifa and Barret's automatic button presses.
* The Four Shrines in ''VideoGame/FinalFantasyIX'' must be activated simultaneously, but the only impact this has on gameplay is forcing you to fight a boss with just two characters; you don't control the rest.

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* ''Franchise/FinalFantasy'':
**
Used as a minigame in ''VideoGame/FinalFantasyVII'', where to open a security door three party members must push three widely separated buttons at the same time, the player only controls Cloud and has to timed their button press with Tifa and Barret's automatic button presses.
* ** The Four Shrines in ''VideoGame/FinalFantasyIX'' must be activated simultaneously, but the only impact this has on gameplay is forcing you to fight a boss with just two characters; you don't control the rest.
23rd Jan '17 1:04:48 AM Morgenthaler
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* Oddly enough, only two "puzzles" in ''VideoGame/ResidentEvil4'' need Leon and Ashley to do this.

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* ''VideoGame/ResidentEvil'':
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Oddly enough, only two "puzzles" in ''VideoGame/ResidentEvil4'' need Leon and Ashley to do this.
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http://tvtropes.org/pmwiki/article_history.php?article=Main.TwoKeyedLock