this is a pretty bad idea

code/_onclick/click.dm

@@ -200,7 +200,7 @@
 			if (!target.loc)
 				continue
 
-			if(!(SEND_SIGNAL(target.loc, COMSIG_ATOM_CANREACH, next) & COMPONENT_BLOCK_REACH) && !ismob(target.loc))
+			if(!(SEND_SIGNAL(target.loc, COMSIG_ATOM_CANREACH, next) & COMPONENT_BLOCK_REACH) && target.loc.canReachInto(src, ultimate_target, next, view_only, tool))
 				next += target.loc
 
 		checking = next
@@ -215,6 +215,10 @@
 /mob/living/DirectAccess(atom/target)
 	return ..() + GetAllContents()
 
+//This is called reach into but it's called on the deepest things first so uh, make sure to account for that!
+/atom/proc/canReachInto(atom/user, atom/target, list/next, view_only, obj/item/tool)
+	return TRUE
+
 /atom/proc/AllowClick()
 	return FALSE
 

code/datums/components/storage/storage.dm

@@ -96,6 +96,7 @@
 	RegisterSignal(parent, COMSIG_ITEM_PICKUP, .proc/signal_on_pickup)
 
 	RegisterSignal(parent, COMSIG_MOVABLE_POST_THROW, .proc/close_all)
+	RegisterSignal(parent, COMSIG_MOVABLE_MOVED, .proc/check_views)
 
 	RegisterSignal(parent, COMSIG_CLICK_ALT, .proc/on_alt_click)
 	RegisterSignal(parent, COMSIG_MOUSEDROP_ONTO, .proc/mousedrop_onto)
@@ -386,6 +387,11 @@
 		close(M)
 		. = TRUE //returns TRUE if any mobs actually got a close(M) call
 
+/datum/component/storage/proc/check_views()
+	for(var/mob/M in can_see_contents())
+		if(!isobserver(M) && !M.CanReach(src, view_only = TRUE))
+			close(M)
+
 /datum/component/storage/proc/emp_act(datum/source, severity)
 	if(emp_shielded)
 		return

code/game/objects/structures/crates_lockers/closets.dm

@@ -614,3 +614,6 @@
 		user.resting = FALSE
 		togglelock(user)
 		T1.visible_message("<span class='warning'>[user] dives into [src]!</span>")
+
+/obj/structure/closet/canReachInto(atom/user, atom/target, list/next, view_only, obj/item/tool)
+	return ..() && opened

code/modules/mob/inventory.dm

@@ -468,3 +468,6 @@
 			bodyparts += BP
 			hand_bodyparts[i] = BP
 	..() //Don't redraw hands until we have organs for them
+
+/mob/canReachInto(atom/user, atom/target, list/next, view_only, obj/item/tool)
+	return ..() && (user == src)