Steve Bull is a mixed-media technology artist whose practice includes extensive coding and hardware hacking. For the last ten years he has created location specific music installations, narratives and first person performance events that explore the social, technological, and creative possibilities of cell phones. Cellphonia, a locative-based karaoke cell phone opera, which Bull created in collaboration with Scot Gresham-Lancaster, has received support from the New York State Council on the Arts, Experimental TV Center, and Harvestworks. Cellphonia has been presented at the ISEA Zero One Festival, Eyebeam, Mobility Music in England, ICMC 2010, and E.A.T. In 2013, Cellphonia: Toronto SONicGeo, a gathering of the phone voices into an ephemeral evolving sound collage was commissioned by New Adventures in Sound Art (NAISA). A sixty-second 5:1 distillation Cellphonia: Toronto is included in 60x60 Surround Sound (2014). Bull's augmented reality work has been shown at the Albion ARt Walk, Ventana 244 Art Space, Governor's Island and included in the Municipal Art Society of New York's walking tour to Castle Clinton in Battery Park. Bull's inVisible Presence is a permanent installation at the Liguria Study Center, Bogliasco, Italy.