I would have added more pictures but it wouldn’t let me. sorry
if you need further info go to JoeTheChicken for another guide
so first add any prop that will cover the amount of space you need covered,
second add a vending machine and click on it to go to to options, then change Purchase Action from Grant Item to Transmit on Channel
Then change the required item to whatever you want EX: Blue Keycard
!
then scroll down till you see Item Visible in game change that from yes to no,
then move the vending machine right in front of your “Door” prop
then you need to add wires from the vending machine to your prop and choose Item Purchased → hide Prop
then just add a way for the player to get the item required to open your door
for my example ill use an item spawner but another good way is to use a trip wire with item granter(in one of my other guides)
then just hit start and it should work!