Three paper presentation “Patina Engraver: Visualizing Activity Logs?as Patina in?Fashionable Trackers“. “The Trial of Bendi in a Coffeehouse: Use of a Shape-Changing Device for a Tactile-Visual Phone Conversation”, “G-raff: An Elevating Tangible Block for Spatial Tabletop?Interaction“, two video showcase “G-raff”, “Bendi” and one poster “Augmented Miniature Prototyping Toolkit for UX in?Interactive Space” were presented at CHI2015 Seoul. Also “Patina Engraver: Visualizing Activity Logs?as Patina in?Fashionable Trackers”?has received a best paper award. Prof. Nam has participated in CHI2015 as a design subcommittee chair.?