Koji Yatani

Auth ‘n’ Scan

2018 · Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies

Recent commodity smartphones have biometric sensing capabilities, allowing their daily use for authentication and identification. This increasing use of biometric systems motivates us to design an opportunistic way to sense user's additional physiological or behavioral …

DIPA : An Image Dataset with Cross-cultural Privacy Concern Annotations

2023

Image privacy protection is an important topic in Human-Computer Interaction and usable security. Researchers have examined different aspects of image privacy by collecting samples by themselves. However, there does not exist a publicly-available dataset on …

From Voice to Value: Leveraging AI to Enhance Spoken Online Reviews on the Go

2024

Online reviews help people make better decisions. Review platforms usually depend on typed input, where leaving a good review requires significant effort because users must carefully organize and articulate their thoughts. This may discourage users …