Conclusions

Broken locks in public restrooms are very common. And it really is an embarrassing experience when someone just walks in your cubicle when you are still doing your "business". That is the main reason why we decided to make this project. Based on our experience when we were making the project, we can conclude the following:

1) It is possible to make a simple laser system to indicate if the cubicle is currently occupied or not.

2) This project is cheap to make because it only need a few materials.

Of course there are modifications that are needed to be made when this is done in full-scale. Also, the lasers could be replaced by a different kind of light so that it will not be visible to the person inside the cubicle (as this might bother the person inside).