Friendfracker is a service that automatically deletes a set of friends from your Facebook account. Upon authenticating your data on the website, the service deletes 1 to 10 friends at random. The project was developed with Harper Reed for Rhizome's 7 on 7 conference. View Details.

An interactive artwork that allowed participants’ voices to transform the sky over Philadelphia. Using a website or a free iPhone app participants could record a voice message and listen to and rate other entries. The messages were played-back over the Benjamin Franklin Parkway using 24 powerful robotic searchlights that reacted, both in brightness and position, to the voice’s frequency and volume as well as to the phone's GPS location. View Details.

As a participant speaks into an intercom, his or her voice is automatically translated into flashes of light and then the unique blinking pattern is stored as a loop in the first light of the array. Each new recording pushes all previous recordings one position down and gradually one can hear the cumulative sound of the 288 previous recordings. The voice that was pushed out of the array can then be heard by itself. View Details.

A small format artwork where over 500,000 combinations of proper names, companies and cities are presented as random inequalities by two electronic paper displays. View Details.

Please Empty your Pockets is an installation that consists of a conveyor belt with a scanner that records and accumulates everything that passes under it. The public may place any small object on the conveyor belt: once it passes under the scanner, the object reappears on the other side beside projected objects from the memory of the installation. As a real item is removed from the conveyor belt, it leaves behind a projected image of itself, which is then used to accompany future objects. The piece remembers up to 600,000 objects which are displayed beside new ones that are added to the installation. View Details.

An installation designed to displace the public’s image in real-time, creating a platform for embodiment and interpenetration. The piece consists of floor-mounted projectors that cast the shadow of the public onto a wall and another set of hanging projectors which project images inside the shadows. View Details.

"Pulse Index" is an interactive installation that records participants’ fingerprints at the same time as their heart rates. The piece displays data for the last 765 and over participants in a stepped display that creates a horizon line of skin. As new recordings are added, the oldest ones disappear, —a kind of memento mori. To participate, people introduce their finger into a custom-made sensor equipped with a digital microscope and a heart rate sensor; their fingerprint immediately appears on the largest cell of the display, pulsating to their heart beat. View Details.

Pulse Phone is an application that measures your heart rate by using the iPhone's built-in camera and flash. The application detects small variations in the opacity of your finger as blood flows through it and calculates your pulse in beats per minute using this information. The app visualizes the data graphically and can store it for later reference. View Details.

"The Company of Colours" is the ninth piece in the Shadow Box series of interactive displays with a built-in computerized tracking system. This piece shows the live camera view constructed out of a palette of named colour swatches that can be rendered by computers. Every few minutes the piece automatically switches to show the live view made with a variety of culturally-significant colour palettes from computer and videogame history, including the 4 shades of green of the original Nintendo Gameboy, the eight colours of teletext, and the sixteen colours of the Commodore 64, the Apple II and the ZX Spectrum. View Details.

"Voz Alta" (Loud Voice) is a memorial commissioned for the 40th anniversary of the student massacre in Tlatelolco. Participants who speak into a megaphone automatically control the brightness of four searchlights that relay their voice over Mexico City as quiet light flashes; tuning into 96.1FM radio allows people anywhere in the city to listen in live to what the lights are saying. View Details.

"Make Out" is the eight piece in the Shadow Box series of interactive displays with a built-in computerized tracking system. This piece shows thousands of internet videos of couples looking at each other: as soon as someone stands in front of the display his or her silhouette is shown and all the couples within it begin to kiss. The massive array of make-out sessions continues for as long as someone is in front of the work, --as he or she moves away all the kissing ends. View Details.

"Pulse Park" is comprised of a matrix of light beams that graze the central oval field of Madison Square Park. Their intensity is entirely modulated by a sensor that measures the heart rate of participants and the resulting effect is the visualization of vital signs, arguably our most symbolic biometric, in an urban scale. View Details.

"Alpha Blend" is the seventh piece in the Shadow Box series of interactive displays with a built-in computerized tracking system. This piece shows the viewer's presence revealing and blending pictures of people who have recently looked at the work. A game of "reverse puppetry" ensues, where a portrait from the past is animated by a live presence, in a similar preceptual mechanism than the one used in Lozano-Hemmer's public art installation "Body Movies". View Details.

"Pulse Spiral" is a three-dimensional spiral paraboloid made up of 400 lightbulbs arranged according to Fermat's equations, which records and responds to the heart rate of participants who hold a sensor underneath. Commissioned for the opening of the Center for Contemporary Culture in Moscow in the constructivist Bakhmetevsky Bus Garage, the piece is inspired by engineer Vladimir Shukov who worked with Melnikov on this emblematic building from 1926-28. View Details.

"Microphones" is an interactive installation featuring one or several 1939-vintage Shure microphones, placed on mic stands around the exhibition room at different heights. Each microphone has been modified so that inside its head is a tiny loudspeaker and a circuit board connected to a network of hidden control computers. When a public member speaks into a microphone, it records his or her voice and immediately plays back the voice of a previous participant, as an echo from the past. View Details.

"Reporters With Borders" is a high resolution interactive display that simultaneously shows 864 video clips of news anchors taken from TV broadcasts in the United States and Mexico. As the viewer stands in front of the piece his or her silhouette is shown on the display and within it reporters begin to talk. Every 5 minutes the piece switches the video clips - from a database of 1600 - and classifies them along gender, race and country, so that for instance on the left there are only American reporters and on the right only Mexicans. View Details.

"Pulse Front" was a matrix of light over Toronto's Harbourfront, made with lightbeams from twenty powerful robotic searchlights, entirely controlled by a network of sensors that measured the heart rate of passers-by. Ten metal sculptures detected the pulse of people who held them: the readings were immediately converted into light pulses by the computers and also determined the orientation of the beams. View Details.

"Close-up" is the third piece of the ShadowBox series of interactive displays with a built-in computerized tracking system. This piece shows the viewer's shadow revealing hundreds of tiny videos of other people who have recently looked at the work. When a viewer approaches the piece, the system automatically starts recording and makes a video of him or her. Simultaneously, inside the viewer's silhouette videos are triggered that show up to 800 recent recordings. This piece presents a schizoid experience where our presence triggers a massive array of surveillance videos. View Details.

"Third Person" is the second piece of the ShadowBox series of interactive displays with a built-in computerized tracking system. This piece shows the viewer's shadow revealing hundreds of tiny words that are in fact all the verbs of the dictionary conjugated in the third person. The portrait of the viewer is drawn in real time by active words, which appear automatically to fill his or her silhouette. The collector may choose to display the words in English, Spanish or French, or a combination of the three languages. View Details.

"Eye Contact" is the first piece of the Shadow Box series of interactive displays with a built-in computerized tracking system. This piece shows eight hundred simultaneous videos of people lying down, resting. As soon as a public member is detected, his or her presence triggers the miniature video portraits to wake up: hundreds of people simultaneously turn to look at the visitor directly, creating an uncanny experience that questions who is the observer and who is the observed. View Details.

"Pulse Room" is an interactive installation featuring one to three hundred clear incandescent light bulbs, 300 W each and hung from a cable at a height of three metres. The bulbs are uniformly distributed over the exhibition room, filling it completely. An interface placed on a side of the room has a sensor that detects the heart rate of participants. When someone holds the interface, a computer detects his or her pulse and immediately sets off the closest bulb to flash at the exact rhythm of his or her heart. View Details.

"Subtitled Public" consists of an empty exhibition space where visitors are detected by a computerised surveillance system. When people enter the space, the system generates a subtitle for each person and projects it onto him or her: the subtitle is chosen at random from a list of all the verbs conjugated in the third person. The only way of getting rid of a subtitle is to touch another person, which leads to the two subtitles being exchanged. View Details.

"Under Scan" is a public art installation based on self-representation. Thousands of "video-portraits" taken in Derby, Leicester, Lincoln, Northampton and Nottingham are projected onto the ground; at first, the portraits are not visible because the space is flooded by white light coming from a high-powered projector. As people walk around the area, their shadows are cast on the ground, revealing the video-portraits in short sequences. View Details.

"Amodal Suspension" is a large-scale interactive installation where people can send short text messages to each other using a cell phone or web browser. However, rather than being sent directly, the messages are encoded as unique sequences of flashes with twenty robotically-controlled searchlights, not unlike the patterns that make up Morse code. Messages "bounce" around from searchlight to searchlight, turning the sky into a giant switchboard. View Details.

1,000 Platitudes is a large-scale photographic intervention project. It is comprised of photomontages and a video with 1,000 words or expressions commonly used to promote globalised cities to potential investors, such as "open", "modern", "clean", "multicultural" and "cosmopolitan", for example. To make these images, a powerful projector (110,000 ANSI lumens of intensity for images of up to 70 x 70 metres) was placed on a 12-ton truck with a generator. View Details.

"Body Movies" transforms public space with interactive projections measuring between 400 and 1,800 square metres. Thousands of photographic portraits, previously taken on the streets of the host city, are shown using robotically controlled projectors. However the portraits only appear inside the projected shadows of the passers-by, whose silhouettes can measure between two and twenty-five metres depending on how close or far away they are from the powerful light sources positioned on the ground. View Details.

"33 Questions Per Minute" consists of a computer program which uses grammatical rules to combine words from a dictionary and generate 55 billion unique, fortuitous questions. The automated questions are presented at a rate of 33 per minute --the threshold of legibility-- on 21 tiny LCD screens encrusted on the support columns of the exhibition hall or mounted on a wall. The system will take over 3,000 years to ask all possible questions. A keyboard allows participants to log on to the building and add their own questions to the automatic flow. View Details.

"Displaced Emperors" was an installation that used an "architact" interface to transform the Habsburg Castle in Linz, Austria. Wireless 3D sensors calculated where participants pointed to on the façade and a large animated projection of a hand was shown at that location. As people on the street "caressed" the building, they could reveal the interiors of the Habsburg residence in Mexico City, Castillo de Chapultepec. View Details.

"Surface Tension" is an interactive installation where an image of a giant human eye follows the observer with orwellian precision.This work was inspired by a reading of Georges Bataille's text The Solar Anusduring the first Gulf War: first wide-spread deployment of camera-guided "intelligent bombs". Present-day computerised surveillance techniques employed by the Department of Homeland Security in the United States through the Patriot Act, provide a new and distressing backdrop for this piece. View Details.

1,000 Platitudes is a large-scale photographic intervention project. It is comprised of photomontages and a video with 1,000 words or expressions commonly used to promote globalised cities to potential investors, such as "open", "modern", "clean", "multicultural" and "cosmopolitan", for example. To make these images, a powerful projector (110,000 ANSI lumens of intensity for images of up to 70 x 70 metres) was placed on a 12-ton truck with a generator. View Details.

"33 Questions Per Minute" consists of a computer program which uses grammatical rules to combine words from a dictionary and generate 55 billion unique, fortuitous questions. The automated questions are presented at a rate of 33 per minute --the threshold of legibility-- on 21 tiny LCD screens encrusted on the support columns of the exhibition hall or mounted on a wall. The system will take over 3,000 years to ask all possible questions. A keyboard allows participants to log on to the building and add their own questions to the automatic flow. View Details.

"Alpha Blend" is the seventh piece in the Shadow Box series of interactive displays with a built-in computerized tracking system. This piece shows the viewer's presence revealing and blending pictures of people who have recently looked at the work. A game of "reverse puppetry" ensues, where a portrait from the past is animated by a live presence, in a similar preceptual mechanism than the one used in Lozano-Hemmer's public art installation "Body Movies". View Details.

"Amodal Suspension" is a large-scale interactive installation where people can send short text messages to each other using a cell phone or web browser. However, rather than being sent directly, the messages are encoded as unique sequences of flashes with twenty robotically-controlled searchlights, not unlike the patterns that make up Morse code. Messages "bounce" around from searchlight to searchlight, turning the sky into a giant switchboard. View Details.

"Body Movies" transforms public space with interactive projections measuring between 400 and 1,800 square metres. Thousands of photographic portraits, previously taken on the streets of the host city, are shown using robotically controlled projectors. However the portraits only appear inside the projected shadows of the passers-by, whose silhouettes can measure between two and twenty-five metres depending on how close or far away they are from the powerful light sources positioned on the ground. View Details.

"Close-up" is the third piece of the ShadowBox series of interactive displays with a built-in computerized tracking system. This piece shows the viewer's shadow revealing hundreds of tiny videos of other people who have recently looked at the work. When a viewer approaches the piece, the system automatically starts recording and makes a video of him or her. Simultaneously, inside the viewer's silhouette videos are triggered that show up to 800 recent recordings. This piece presents a schizoid experience where our presence triggers a massive array of surveillance videos. View Details.

"Displaced Emperors" was an installation that used an "architact" interface to transform the Habsburg Castle in Linz, Austria. Wireless 3D sensors calculated where participants pointed to on the façade and a large animated projection of a hand was shown at that location. As people on the street "caressed" the building, they could reveal the interiors of the Habsburg residence in Mexico City, Castillo de Chapultepec. View Details.

"Eye Contact" is the first piece of the Shadow Box series of interactive displays with a built-in computerized tracking system. This piece shows eight hundred simultaneous videos of people lying down, resting. As soon as a public member is detected, his or her presence triggers the miniature video portraits to wake up: hundreds of people simultaneously turn to look at the visitor directly, creating an uncanny experience that questions who is the observer and who is the observed. View Details.

Friendfracker is a service that automatically deletes a set of friends from your Facebook account. Upon authenticating your data on the website, the service deletes 1 to 10 friends at random. The project was developed with Harper Reed for Rhizome's 7 on 7 conference. View Details.

"Make Out" is the eight piece in the Shadow Box series of interactive displays with a built-in computerized tracking system. This piece shows thousands of internet videos of couples looking at each other: as soon as someone stands in front of the display his or her silhouette is shown and all the couples within it begin to kiss. The massive array of make-out sessions continues for as long as someone is in front of the work, --as he or she moves away all the kissing ends. View Details.

"Microphones" is an interactive installation featuring one or several 1939-vintage Shure microphones, placed on mic stands around the exhibition room at different heights. Each microphone has been modified so that inside its head is a tiny loudspeaker and a circuit board connected to a network of hidden control computers. When a public member speaks into a microphone, it records his or her voice and immediately plays back the voice of a previous participant, as an echo from the past. View Details.

An interactive artwork that allowed participants’ voices to transform the sky over Philadelphia. Using a website or a free iPhone app participants could record a voice message and listen to and rate other entries. The messages were played-back over the Benjamin Franklin Parkway using 24 powerful robotic searchlights that reacted, both in brightness and position, to the voice’s frequency and volume as well as to the phone's GPS location. View Details.

An installation designed to displace the public’s image in real-time, creating a platform for embodiment and interpenetration. The piece consists of floor-mounted projectors that cast the shadow of the public onto a wall and another set of hanging projectors which project images inside the shadows. View Details.

Please Empty your Pockets is an installation that consists of a conveyor belt with a scanner that records and accumulates everything that passes under it. The public may place any small object on the conveyor belt: once it passes under the scanner, the object reappears on the other side beside projected objects from the memory of the installation. As a real item is removed from the conveyor belt, it leaves behind a projected image of itself, which is then used to accompany future objects. The piece remembers up to 600,000 objects which are displayed beside new ones that are added to the installation. View Details.

"Pulse Front" was a matrix of light over Toronto's Harbourfront, made with lightbeams from twenty powerful robotic searchlights, entirely controlled by a network of sensors that measured the heart rate of passers-by. Ten metal sculptures detected the pulse of people who held them: the readings were immediately converted into light pulses by the computers and also determined the orientation of the beams. View Details.

"Pulse Index" is an interactive installation that records participants’ fingerprints at the same time as their heart rates. The piece displays data for the last 765 and over participants in a stepped display that creates a horizon line of skin. As new recordings are added, the oldest ones disappear, —a kind of memento mori. To participate, people introduce their finger into a custom-made sensor equipped with a digital microscope and a heart rate sensor; their fingerprint immediately appears on the largest cell of the display, pulsating to their heart beat. View Details.

"Pulse Park" is comprised of a matrix of light beams that graze the central oval field of Madison Square Park. Their intensity is entirely modulated by a sensor that measures the heart rate of participants and the resulting effect is the visualization of vital signs, arguably our most symbolic biometric, in an urban scale. View Details.

Pulse Phone is an application that measures your heart rate by using the iPhone's built-in camera and flash. The application detects small variations in the opacity of your finger as blood flows through it and calculates your pulse in beats per minute using this information. The app visualizes the data graphically and can store it for later reference. View Details.

"Pulse Room" is an interactive installation featuring one to three hundred clear incandescent light bulbs, 300 W each and hung from a cable at a height of three metres. The bulbs are uniformly distributed over the exhibition room, filling it completely. An interface placed on a side of the room has a sensor that detects the heart rate of participants. When someone holds the interface, a computer detects his or her pulse and immediately sets off the closest bulb to flash at the exact rhythm of his or her heart. View Details.

"Pulse Spiral" is a three-dimensional spiral paraboloid made up of 400 lightbulbs arranged according to Fermat's equations, which records and responds to the heart rate of participants who hold a sensor underneath. Commissioned for the opening of the Center for Contemporary Culture in Moscow in the constructivist Bakhmetevsky Bus Garage, the piece is inspired by engineer Vladimir Shukov who worked with Melnikov on this emblematic building from 1926-28. View Details.

"Reporters With Borders" is a high resolution interactive display that simultaneously shows 864 video clips of news anchors taken from TV broadcasts in the United States and Mexico. As the viewer stands in front of the piece his or her silhouette is shown on the display and within it reporters begin to talk. Every 5 minutes the piece switches the video clips - from a database of 1600 - and classifies them along gender, race and country, so that for instance on the left there are only American reporters and on the right only Mexicans. View Details.

"Subtitled Public" consists of an empty exhibition space where visitors are detected by a computerised surveillance system. When people enter the space, the system generates a subtitle for each person and projects it onto him or her: the subtitle is chosen at random from a list of all the verbs conjugated in the third person. The only way of getting rid of a subtitle is to touch another person, which leads to the two subtitles being exchanged. View Details.

"Surface Tension" is an interactive installation where an image of a giant human eye follows the observer with orwellian precision.This work was inspired by a reading of Georges Bataille's text The Solar Anusduring the first Gulf War: first wide-spread deployment of camera-guided "intelligent bombs". Present-day computerised surveillance techniques employed by the Department of Homeland Security in the United States through the Patriot Act, provide a new and distressing backdrop for this piece. View Details.

"The Company of Colours" is the ninth piece in the Shadow Box series of interactive displays with a built-in computerized tracking system. This piece shows the live camera view constructed out of a palette of named colour swatches that can be rendered by computers. Every few minutes the piece automatically switches to show the live view made with a variety of culturally-significant colour palettes from computer and videogame history, including the 4 shades of green of the original Nintendo Gameboy, the eight colours of teletext, and the sixteen colours of the Commodore 64, the Apple II and the ZX Spectrum. View Details.

"Third Person" is the second piece of the ShadowBox series of interactive displays with a built-in computerized tracking system. This piece shows the viewer's shadow revealing hundreds of tiny words that are in fact all the verbs of the dictionary conjugated in the third person. The portrait of the viewer is drawn in real time by active words, which appear automatically to fill his or her silhouette. The collector may choose to display the words in English, Spanish or French, or a combination of the three languages. View Details.

"Under Scan" is a public art installation based on self-representation. Thousands of "video-portraits" taken in Derby, Leicester, Lincoln, Northampton and Nottingham are projected onto the ground; at first, the portraits are not visible because the space is flooded by white light coming from a high-powered projector. As people walk around the area, their shadows are cast on the ground, revealing the video-portraits in short sequences. View Details.

As a participant speaks into an intercom, his or her voice is automatically translated into flashes of light and then the unique blinking pattern is stored as a loop in the first light of the array. Each new recording pushes all previous recordings one position down and gradually one can hear the cumulative sound of the 288 previous recordings. The voice that was pushed out of the array can then be heard by itself. View Details.

"Voz Alta" (Loud Voice) is a memorial commissioned for the 40th anniversary of the student massacre in Tlatelolco. Participants who speak into a megaphone automatically control the brightness of four searchlights that relay their voice over Mexico City as quiet light flashes; tuning into 96.1FM radio allows people anywhere in the city to listen in live to what the lights are saying. View Details.

A small format artwork where over 500,000 combinations of proper names, companies and cities are presented as random inequalities by two electronic paper displays. View Details.