POSTER: AuthZit: Multi-modal Authentication with Visual-Spatial and Text Secrets

Joon Kuy Han, Dennis Wong, Byungkon Kang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Designing a fallback authentication mechanism that is both memorable and strong is a challenging problem because of the trade-off between usability and security. This challenge is particularly pronounced for accounts that require infrequent authentication, where the authentication secrets must remain secure and easy to recall without frequent reinforcement. Inspired by people’s strong visual-spatial memory and memory via association, we introduce a novel system AuthZit to help address this problem. AuthZit encodes authentication secrets as paths through a 3D map of places in real life navigated in the first person and birds-eye perspective, along with a textual secret tagged with this path. We evaluated the usability and security of our design in two dimensions: memorability after one month and speed through a user study with 20 participants. Our results suggest that (1) user authentication secrets in AuthZit are memorable, and (2) authentication using AuthZit was not significantly slower to enter.

Original languageEnglish
Title of host publicationApplied Cryptography and Network Security Workshops - ACNS 2023 Satellite Workshops, ADSC, AIBlock, AIHWS, AIoTS, CIMSS, Cloud S and P, SCI, SecMT, SiMLA, Proceedings
EditorsJianying Zhou, Lejla Batina, Stjepan Picek, Zengpeng Li, Jingqiang Lin, Eleonora Losiouk, Suryadipta Majumdar, Daisuke Mashima, Weizhi Meng, Mohammad Ashiqur Rahman, Jun Shao, Masaki Shimaoka, Ezekiel Soremekun, Chunhua Su, Je Sen Teh, Aleksei Udovenko, Cong Wang, Leo Zhang, Yury Zhauniarovich
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages5
ISBN (Print)9783031411809
Publication statusPublished - 2023
Event21st International Conference on Applied Cryptography and Network Security, ACNS 2023 - Kyoto, Japan
Duration: 19 Jun 202322 Jun 2023

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume13907 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference21st International Conference on Applied Cryptography and Network Security, ACNS 2023


  • Fallback authentication
  • Human computer interaction
  • Usable security
  • Visual-spatial


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