Seung-Hun was the leader of BLOGcast and CE2.0 project.

He was the leader of SODI (Sociable Display) project, aka Flickr frame. His idea of blog device came from the work when he was at plw in March 2004.

He was a visiting scientist at the MIT Media Laboratory and a member of the Physical Language Workshop in 2004 (Advisor: John Maeda). He worked on the problem how to publish and retrieve the digital contents to the web server such as rf-id bookmark and user interface with real-time visual thumbnails. He presented the tangible information block at the course MAS 710.

He was a leader of several projects related to embedded software for multi-media electronics devices at Samsung Electronics, such as DSP programming on CPAD, Trimedia, and ARM, Analog TV firmware on Pixelworks, Micronus chipsets.

He entered KIT which was undergraduate course of KAIST. The name of KIT was changed to KAIST officially in 2004. KIT name cannot be found on web anymore. He graduated EE in 1994 and obtained EE Ph. D. from KAIST in 2001 (Advisor: Byung Kook Kim).