Fake nuclear disks are even more convincing

code/game/gamemodes/nuclear/nuclearbomb.dm

@@ -79,17 +79,8 @@
 	anchored = TRUE //stops it being moved
 
 /obj/machinery/nuclearbomb/syndicate
-	datum_flags = DF_USE_TAG
 	//ui_style = "syndicate" // actually the nuke op bomb is a stole nt bomb
 
-/obj/machinery/nuclearbomb/syndicate/GenerateTag()
-	var/obj/machinery/nuclearbomb/existing = locate("syndienuke") in GLOB.nuke_list
-	if(existing)
-		stack_trace("Attempted to spawn a syndicate nuke while one already exists at [COORD(existing.loc)]")
-		datum_flags &= ~DF_USE_TAG
-		return
-	tag = "syndienuke"
-
 /obj/machinery/nuclearbomb/syndicate/get_cinematic_type(off_station)
 	var/datum/game_mode/nuclear/NM = SSticker.mode
 	switch(off_station)
@@ -104,8 +95,17 @@
 			return CINEMATIC_NUKE_FAR
 	return CINEMATIC_NUKE_FAR
 
+/obj/machinery/nuclearbomb/proc/disk_check(obj/item/disk/nuclear/D)
+	if(D.fake)
+		say("Authentication failure; disk not recognised.")
+		return FALSE
+	else
+		return TRUE
+
 /obj/machinery/nuclearbomb/attackby(obj/item/I, mob/user, params)
 	if (istype(I, /obj/item/disk/nuclear))
+		if(!disk_check(I))
+			return
 		if(!user.transferItemToLoc(I, src))
 			return
 		auth = I
@@ -313,7 +313,7 @@
 		if("insert_disk")
 			if(!auth)
 				var/obj/item/I = usr.is_holding_item_of_type(/obj/item/disk/nuclear)
-				if(I && usr.transferItemToLoc(I, src))
+				if(I && disk_check(I) && usr.transferItemToLoc(I, src))
 					auth = I
 					. = TRUE
 		if("keypad")
@@ -519,18 +519,37 @@ This is here to make the tiles around the station mininuke change when it's arme
 	name = "nuclear authentication disk"
 	desc = "Better keep this safe."
 	icon_state = "nucleardisk"
-	persistence_replacement = /obj/item/disk/fakenucleardisk
+	persistence_replacement = /obj/item/disk/nuclear/fake
 	max_integrity = 250
 	armor = list(melee = 0, bullet = 0, laser = 0, energy = 0, bomb = 30, bio = 0, rad = 0, fire = 100, acid = 100)
 	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | ACID_PROOF
+	var/fake = FALSE
 
-/obj/item/disk/nuclear/New()
-	..()
-	GLOB.poi_list |= src
-	set_stationloving(TRUE, inform_admins=TRUE)
+/obj/item/disk/nuclear/Initialize()
+	. = ..()
+	var/tell_the_admins
+	// Only tell the admins if a REAL nuke disk is relocated
+	if(fake)
+		tell_the_admins = FALSE
+	else
+		GLOB.poi_list |= src
+		tell_the_admins = TRUE
+
+	set_stationloving(TRUE, inform_admins=tell_the_admins)
+
+/obj/item/disk/nuclear/examine(mob/user)
+	. = ..()
+	if(!fake)
+		return
+
+	var/ghost = isobserver(user)
+	var/captain = user.mind && user.mind.assigned_role == "Captain"
+	var/nukie = user.mind && user.mind.has_antag_datum(/datum/antagonist/nukeop)
+	if(ghost || captain || nukie)
+		to_chat(user, "<span class='warning'>The serial numbers on [src] are incorrect.</span>")
 
 /obj/item/disk/nuclear/attackby(obj/item/I, mob/living/user, params)
-	if(istype(I, /obj/item/claymore/highlander))
+	if(istype(I, /obj/item/claymore/highlander) && !fake)
 		var/obj/item/claymore/highlander/H = I
 		if(H.nuke_disk)
 			to_chat(user, "<span class='notice'>Wait... what?</span>")
@@ -557,12 +576,13 @@ This is here to make the tiles around the station mininuke change when it's arme
 	addtimer(CALLBACK(src, .proc/manual_suicide, user), 101)
 	return MANUAL_SUICIDE
 
-/obj/item/disk/proc/manual_suicide(mob/living/user)
+/obj/item/disk/nuclear/proc/manual_suicide(mob/living/user)
 	user.remove_atom_colour(ADMIN_COLOUR_PRIORITY)
 	user.visible_message("<span class='suicide'>[user] was destroyed by the nuclear blast!</span>")
 	user.adjustOxyLoss(200)
 	user.death(0)
 
+<<<<<<< HEAD
 /obj/item/disk/fakenucleardisk
 	name = "nuclear authentication disk"
 	desc = "Better keep this safe."
@@ -578,3 +598,7 @@ This is here to make the tiles around the station mininuke change when it's arme
 	..()
 	if(Adjacent(user))
 		to_chat(user, "<span class='warning'>Wait, this is a fake!</span>")
+=======
+/obj/item/disk/nuclear/fake
+	fake = TRUE
+>>>>>>> cbd5aec... Fake nuclear disks are even more convincing (#34466)

code/game/gamemodes/objective_items.dm

@@ -73,6 +73,9 @@
 	difficulty = 5
 	excludefromjob = list("Captain")
 
+/datum/objective_item/steal/nukedisc/check_special_completion(obj/item/disk/nuclear/N)
+	return !N.fake
+
 /datum/objective_item/steal/reflector
 	name = "a reflector vest."
 	targetitem = /obj/item/clothing/suit/armor/laserproof