I did the same for my bachelors but we basically pushed a cart with a wifi sampler around the building and built a machine learning model in matlab based on the

I did the same for my bachelors but we basically pushed a cart with a wifi sampler around the building and built a machine learning model in matlab based on the signal strength to access points. It would have worked waaaay better if we had some sort of surveying equipment to accurately capture each few steps of the cart.