Highlights
- You need to use the backlight to see the hidden codes on the whiteboard and boxes.
- The number on the whiteboard matches one box inside the warehouse, which is the locker code.
- The codes on the whiteboard and the boxes will change in every playthrough.
In the Engineering Workshop in Poppy Playtime Chapter 5, there is a locker that you need to unlock to move forward in the story. To find the clues, use your back light to see them on different objects. As the code changes in every playthrough, you need to find the blue yourself before opening the locker. In this guide, we will walk you through the Engineering Workshop Locker Poppy Playtime Chapter 5.
Engineering Workshop Locker Puzzle



Once you reach the Engineering Workshop, go to the whiteboard and use your blacklight on it. Then, interact with the whiteboard to flip it, and you will see a number written there. This number changes in every playthrough. Next, look through the window, and you will see a pack of boxes inside the warehouse.
Each box has a number on it, but you can only see these numbers in the blacklight. Find the box that matches the number you saw on the whiteboard. Once you find the box, you will see a 3 – digit number, which is the locker code. Now, go back to the locker in the Engineering Workshop to enter the code and collect the rewards.
FAQs
- Will the code remain the same for everyone?
- No, the code will not be the same for everyone. It changes in every playthrough.
- What do you need to see the hidden clues?
- You will need the blacklight to see the hidden clues on the whiteboard and boxes.
- What do you find inside the locker Engineering Workshop?
- You will find many useful items that will help you to move forward in the story.
