or public sphere. Later Wodiczko would merge his vehicles with his projections when working with war veterans (see "Recent Work"). Instruments Wodiczko created the Personal Instrument in 1969, his first conceptual design work taken into the public sphere. Though he had a degree in industrial design and created popular electronics for a Polish manufacturer, his design philosophy was influenced by Russian constructivism epitomized by the poet/artist Vladimir Mayakovsky's statement, "the streets our brushes, the squares our palettes." The Personal Instrument consisted of a microphone, worn on the forehead, which retrieved sound while photo-receivers in gloves isolated and filtered the sound through the movement of the hand, which was then perceived discriminately by the artist, perceptually confined by the sound-proof headphones. By emphasizing selective listening, vital (under authoritarian restrictions) to a Polish citizen's survival, Wodiczko intimated the prevalence of censored speech, registering "dissent of a system that fostered one-directional critical thinking – listening over speech." After his work with the homeless community in New York City and Philadelphia, Wodiczko returned to the possibilities of smaller, personal instruments as conceptual and functional objects to offset the problems of communication for urban migrants. Initially based on the iconic staff of the wandering prophet, the Alien Staff (1992 and its variant, 1992/93) was designed to mediate conversation between aliens (the juridical term designating all immigrants whether of legal or illegal status) and the franchised population of an urban environment. The staff not only presented an object of curiosity to passersby, causing them to interrupt their pace long enough to ask questions, it also became a repository of narrative recording and objects both sacred or necessary (e.g., green cards or family mementoes) to the lives of the immigrants. Influenced by Julia Kristeva's Strangers to Ourselves (1991), Wodiczko developed new equipment in 1993 that focused even more directly on democratic speech rights for the performative stranger. Mouthpiece (Porte-parole) was intended to act as a protective zone so that the immigrant could expand her narrative outward into a collective experience thereby pulling her out of isolation. The video technology, to be worn over the mouth, makes strange the familiar thereby creating a point of entry for passersby to enter into conversation with the immigrant. Between 1993 and 1997, thirteen culturally displaced persons used variants of the Mouthpiece in Paris, Malmö, Helsinki, Warsaw, Amsterdam, Trélazé, and Angers. Xenology In its earliest sense, the ancient Greek xeinos was the