Context or Digits? Balancing Memorability and Efficiency in Virtual Reality Authentication

2026-08-29

AI Summary

研究提出了一种基于虚拟环境上下文的自适应方向认证方法(ADBA)，旨在平衡记忆性和效率，通过对比实验验证了其在记忆性、任务负担感知和安全性方面的优势。

Abstract

We present Adaptive Direction-Based Authentication (ADBA), a knowledge-based authentication method for Virtual Reality that decouples users' needs temporally by enforcing password creation based on virtual environment context while supporting both context- and digit-based entries during authentication. This design prioritizes memorability for new passwords and offers both efficient and memorable options to support users' evolving needs. We conducted a remote longitudinal study with 66 participants comparing ADBA against 6-digit PINs over 2-3 weeks. The results demonstrated that ADBA achieved superior memorability and lower perceived task load. Interestingly, no participant chose to enter via digits in the study, yet they still perceived ADBA to be highly efficiency despite longer objective entry times. ADBA also provided security benefits through randomly-generated digit representations, though some degree of password homogeneity was observed in specific virtual environments. Our findings suggest that ADBA offers solid advantages to the traditional PINs, and successfully addresses the tradeoffs between efficiency, memorability, and security under the usage scenarios considered in the study.

Problem

• Virtual Reality
• Authentication
• Memorability
• Efficiency

Innovation

• Adaptive Direction-Based Authentication
• Virtual Reality
• memorability
• efficiency
• security