JANUS is simply a double-sided POV display. Users on each side can see independently displayed images, while scenes behind the screen are also clearly visible. The transparency of the display is determined mostly by the width of the display bar. In the current prototype, the transparency is about 95%.
SIGGRAPH 2014(Emerging Technologies)


EveryUse is the new platform particularly designed for sharing cases of artifact appropriation. However, EveryUse not only involves sharing and viewing; it also includes other activities, such as commenting and ¡°scrapping¡± (saving or bookmarking) others¡¯ cases, and ¡°following¡± other participants. EveryUse is developed as an Android application, to run on an Android device with an OS version higher than 2.3.3 (Gingerbread), so that people could download EveryUse from Google Play and install it on an Android-based mobile phone.
International Journal of Design


CUBEMENT is a set of cubes for modular design that act as a meaningful trial for the democratization of design and manufacturing. The aim of CUBEMENT is to create a seed movement, expand the application of structural mechanisms further, and control that movement by embracing other platforms within its platform.
TEI 2014 (Short paper and demo)


(in collaboration with HCI Lab at KAIST) Transwall is a two-sided touchable see-through display wall with a surface transducer incorporated. Transwall concept enables people to see, hear, or even touch other people through the wall while enjoying gaming and interpersonal communication.
SIGGRAPH 2013(Emerging Technologies)
Exhibition of SIGGRAPH 2013
Discovery Channel (Daily Planet)
Reuters TV
KBS news (in Korean)
SBS news (in Korean)
Yonhap news (in Korean)


SOUND BOUND is an interactive graphic equalizer(frequency spectrum). It displays the magnitude of frequency akin to traditional graphic equalizers or other sound visualizers, and it also allows the user to distort and create sounds by touch interaction.
CHI 2013(Interactivity)


(in collaboration with HCI Lab at KAIST) TapBoard is a touch screen software keyboard that regards tapping actions as keystrokes and enables other touches for more useful operations; such as resting, feeling surface textures, and making gestures.
CHI 2013 (Paper / Honorable mention)


Inflated Roly-Poly
Inflated Roly-Poly is an air-contained display medium that can be directly deformed and spatially moved by physical inputs for interactive games. We are envisioning that this new device creates an enjoyable experience with friendly materials and a playful form factor design.
TEI 2012 (Short paper & Demo)


MoleBot is a mole robot built under a transformable game-board inspired table that allows people to enjoy playful interactions with everyday objects and props, and experience what it feels like to have a mole live under your table.
Laval Virtual Awards 2012 (Grand Prix du Jury)
SIGGRAPH 2011 (Emerging Technologies)
Interactions (Demo hour)
www.01net.com (in French)
KBS news (in Korean)
YTN news (in Korean)



(in collaboration with HCI Lab at KAIST)
RemoteTouch is a touch-screen-like interaction technique with a remote control in the TV-viewing environment. A shadow representing the thumb touches the screen, presses a button, flicks a cover-flow list, and draws a simple stroke while the thumb stays and moves on and over the touchpad.
CHI 2011 (Paper)


Kinetic Tiles
Kinetic Tiles are modular construction units for physical kinetic animations. People can assemble and animate the Kinetic Tiles through simple tangible-touch interaction with the modules.
CHI 2011 (Note)
UIST 2010 (Poster)


Shade Painting
Instead of using paint, people can draw something on a canvas using BuckyBalls, spherical neodymium magnets. Putting a BuckyBall into a hole on the acrylic aboard makes the spandex surface concave and creates shades on the canvas. Interestingly, this method of canvas art makes the drawings on the canvas easily erasable.


Digital Decal
(in collaboration with HCI Lab at KAIST)
The idea of digital decal was originated from the traditional decal technique, which has been widely loved by people thanks to its playfulness and directness. With digital decal, ordinary paper replaces special decal films. The user can simply place a sheet of printed paper on the tablet screen, and then rub on it with a pen. The rubbed image is transferred directly to the screen in the same manner as with a traditional decal.
SIGGRAPH 2009 (Emerging technologies)


Crystal Zoetrope
What if you found a jellyfish swimming through your table at a restaurant or pub? We produced a miniaturized zoetrope that generates a compelling three-dimensional animation, and yet is small enough to be embedded in everyday objects, by using the Sub-Surface Laser Engraving (SSLE) technique.
SIGGRAPH 2009 (Emerging technologies)


Shade Pixel
Shade Pixel is an interactive display that uses flexible Spandex to represent information. It can be used as an ambient display for its peripherality; non-luminescent nature and simple appearance. The main difference from other displays is that Shade Pixel is applicable to the surfaces of everyday products or to the environment as an interactive skin.
SIGGRAPH 2008 (Poster presentation)

iF concept design award 2012



Inflatable Mouse
Inflatable Mouse is a volume-adjustable user interface. It can be inflated up to the volume of a familiar mouse, but be deflated and stored flat in a PC card slot of a laptop computer when not in use. Inflatable Mouse functions just like a typical mouse; moreover, it provides new interaction techniques by sensing the air pressure in the balloon of the mouse.

CHI 2008 (Note)



Digital Rubbing
(in collaboration with HCI Lab at KAIST)
Digital rubbing is a playful and intuitive interaction technique for transferring a graphic image directly onto paper. We designed TransPen and MimeoPad to realize digital rubbing. With these drawing tools, children and adults can use rubbing motions to transfer a digital image directly to paper and produce a drawing with a personal touch and natural texture, just as in traditional rubbing. Digital rubbing technique would be useful in arts and design as a new way of expression in the process of drawing and editing ideas.
SIGGRAPH 2007 (Emerging technologies)
Laval Virtual ReVolution 2008 (Winner of welcome class)
SCHI 2008 (Interactivity)



Project archives
2006: TransPen & MimeoPad: Design for Wearability: Button Keyboard: 2005: One-key Keyboard: Design for Wearability: Extended GUI: Tangible Game Console: Bi-manual Interaction: Pocketability and Readability 2004: FeelTip: Spatial Interaction Device: Mixed Reality Television: Digital Skin 2003: Human-Robot Interaction Design: Augmented Foam: AR Pointer and Augmented E-Commerce: IdeaSync