Publications

[UIST'26] Fold2Unfold: Screen Privacy Protection against Shoulder Surfing using Inter-Screen Reflection on Foldable Smartphones

Kyoosik Lee, Jiha Kim, Jonghyuk Yun, Suwon Yoon, Jun Han*, Inseok Hwang*

ACM Symposium on User Interface Software and Technology (To appear)

[MobiSys'26] Hide-and-Sweep: Detecting Concealed Cameras via LED Illumination Sweeps

Jonghyuk Yun, Jaeyoung Moon, Yunseo Park, Sean Rui Xiang Tan, Byunghyun Kim, Rajesh Krishna Balan, and Jun Han

ACM International Conference on Mobile Systems, Applications, and Services 

[ paper / slides / video] 

[Poster Abstract: MobiSys'26] Poster: Detecting Hidden Cameras using LED Illumination Sweeps

Jonghyuk Yun, Jaeyoung Moon, Yunseo Park, Sean Rui Xiang Tan, Byunghyun Kim, Rajesh Krishna Balan, and Jun Han

ACM International Conference on Mobile Systems, Applications, and Services 

[ poster abstract / poster] 

[Journal] Mind Your Indices! Index Hijacking Attacks on Collaborative Unpooling Autoencoder Systems

Kichang Lee, Jonghyuk Yun, Jaeho Jin, Jun Han, and Jeonggil Ko

Internet of Things, 2025. (IF=6.0, JCR IF TOP 11.4%) 

[ paper ]

[GetMobile'24] Smartphone to Rescue: Detecting Counterfeit Powdered Food Products

Jonghyuk Yun, Kyoosik Lee, Kichang Lee, Bangjie Sun, Jaeho Jeon, Jeonggil Ko, Inseok Hwang, and Jun Han

GetMobile: Mobile Computing and Communications (Invited Article)

[ paper ] 

[MobiSys’24] PowDew: Detecting Counterfeit Powdered Food Products using a Commodity Smartphone

Jonghyuk Yun, Kyoosik Lee, Kichang Lee, Bangjie Sun, Jaeho Jeon, Jeonggil Ko, Inseok Hwang, and Jun Han

ACM International Conference on Mobile Systems, Applications, and Services

Featured on several Korean major news/media including: YTN (video), Yonhap, Chosun, DongA, SE Daily, KAIST News, and more

[ paper / slides ] 🏆 BEST PAPER AWARD, SIGMOBILE Research Highlight 🏆

[POSTER ABSTRACT: SenSys’24] Towards Privacy Preserving Patient State Classification in Psychiatric Seclusion Room using mmWave Radar

Dongjin Seo, Jonghyuk Yun, Seongjin Wang, Jaewoo Son and Jun Han
ACM Conference on Embedded Networked Sensor Systems

[ poster abstract / poster / 1min-madness / news] 🏆 BEST POSTER AWARD 🏆

[POSTER ABSTRACT: MobiSys’24] Towards Counterfeit Powdered Food Products Detection using a Commodity Smartphone

Jonghyuk Yun, Kyoosik Lee, Kichang Lee, Bangjie Sun, Jaeho Jeon, Jeonggil Ko, Inseok Hwang, and Jun Han

ACM International Conference on Mobile Systems, Applications, and Services

[ poster abstract / poster ]

[HotMobile’23] RampScope: Ramp-level Localization of Shared Mobility Devices using Sidewalk Ramps

Jonghyuk Yun*, Gyuyeon Kim*, Soundarya Ramesh, and Jun Han

ACM International Workshop on Mobile Computing Systems and Applications

[ paper / slides ] 🏆 BEST POSTER AWARD 🏆 (*Poster accompanied full paper) * co-primary authors

[DEMO ABSTRACT: MobiSys’23] Exploiting Indices for Man-in-the-Middle Attacks on Collaborative Unpooling Autoencoders

Kichang Lee, Jonghyuk Yun, Jun Han, and JeongGil Ko

ACM International Conference on Mobile Systems, Applications, and Services

[ paper ]