Is there a better way to detect which side of a door a player is coming through?

I made this script that's supposed to, at random, close a door that the player is about to walk through by itself. I did this by having 4 total parts, two of which are the actual door closing parts, and the other two acting as "detectors" to see what side the player is coming through. I then put which side they're coming through in a value, which the random door closing script can read. It looks something like this:

function AutoClose(part)
		if part.Parent:FindFirstChild("Humanoid") then
			if Open == true then -- if door is already opened..
				if not Debounce2 then 
				Debounce2 = true
				local closechance = math.random(1, 6)
				if closechance == 3 then
			
				-- do stuff to close door
					
					Open = false
					CloseSound:Play() -- "closesound" being another sound 
					script.Parent.Door.DoorError:Play()
					Door.Transparency = 0
					for i,v in pairs(Door:GetChildren()) do
						if v:IsA("Decal") then
						v.Transparency = 0
						end
					end
			
					for i = 1,(Door.Size.z / 0.20) do
						Door.CFrame = Door.CFrame + (Door.CFrame.lookVector * 0.20)
						wait()
					end
				end
			end
		wait(5)
		Debounce2 = false
		end
	end
end

-- if they're near the front...
script.Parent.SCP079partFront.Touched:Connect(function(part)
		if script.Parent.PlayerLocation.Value == "front" then
		AutoClose(part)
	end
end)

-- if they're near the back...
script.Parent.SCP079partBack.Touched:Connect(function(part)
		if script.Parent.PlayerLocation.Value == "back" then
		AutoClose(part)
	end
end)

The script for sending which side they're going through looks like this:

script.Parent.front.Touched:Connect(function(part)
	if part.Parent:FindFirstChild("Humanoid") then
		script.Parent.PlayerLocation.Value = "front"
	end
end)

script.Parent.back.Touched:Connect(function(part)
	if part.Parent:FindFirstChild("Humanoid") then
		script.Parent.PlayerLocation.Value = "back"
	end
end)

This works almost perfectly, although there's a small problem; if the player goes and opens the door, but then walks back from the same side in which they came, there's a chance the door will close even though they weren't walking towards it with the intention of going through. This is a pretty small problem, but nonetheless I was wondering if there was a better way of detecting if a player is about to walk through an open door.

In case it helps anyone familiar with SCP, I'm trying to replicate that thing SCP-079 does when he auto-closes a door you're about to walk through (in SCP: Containment Breach).