Pervasive computing environments will combine everyday physical spaces with network aware devices and services; hence providing computing behaviour that is much more entwined with the environments we inhabit. Within such environments, a nomadic user will own and make use of many services attached to, and organised around, physical space. This study introduces the concept of a personal operating space: an entity formed for personalisation of space specific services, by treating a user’s personal mobile device as an identity for personalisation.