After the feedback, I felt we had to go in a different direction. We came up with a terminal-ish pillar, mainly made out of glass. In this way, the user could see his package going down or coming up the pillar. This shape also allowed us to use a better operatable display.
The bottom part of the pillar is orange glass, PostNL’s main color. The middle part is made out of clear glass. It has a moving panel which acts as a door. The top is a more rigid and non-translucent material like a polycarbonate or metal.
This is the final prototype of the product. The 3D model is made in Blender. Even though this was one of my first creations using this tool, I am quite happy with the result. To give the client an idea of the way it works, I made a small demo animation. Both the client and my teacher were very happy with the final results.