Thecla Schiphorst Frank Nack Michiel Kauw A Tjoe Simon de Bakker Stock Lora Aroyo Angel Perez Rosillio Hielke Schut Norman Jaffe PillowTalk: can we afford intimacy? 23-30 2007 conf/tei/2007 Tangible and Embedded Interaction http://doi.acm.org/10.1145/1226969.1226975 db/conf/tei/tei2007.html#SchiphorstNTBSARSJ07