We describe the opportunities and challenges of using mobile phones as 
ubiquitous service gateways that mediate between emerging sensor technologies 
and networks of smart items on the one hand and existing global networks and 
service infrastructure on the other hand. We present an application for such a 
system to support users when they search for daily-life objects that they have 
lost or misplaced. Along with a description of the scenarios, we outline a 
system architecture including tagged objects, object detectors and mobile 
phones, and show future research directions.