3 Graeme Stevenson Lorcan Coyle Steve Neely Simon Dobson Paddy Nixon 2005 IT&T Annual Conference, Cork Institute of Technology, Ireland 26/10/2005 construct, middleware, pervasive computing, ubiquitous computing In this paper we describe ConStruct, a distributed, decentralised infrastructure for the collection, processing and distribution of context information in a ubiquitous computing environment.