I coördinate an 'igs lokaal woonbeleid' and this has proven to be tremendously useful. Maps are the best way to visualise the impact that we have and being able to pinpoint an exact location has prevented a lot of mistakes and misunderstandings. 10 Years ago it wasn't unthinkable that my colleagues lost several hours in a day searching for certain houses. I was one of the first that started using capakeys instead of adresses in my company.