vrCAPTCHA: Exploring CAPTCHA Designs in Virtual Reality
This addresses the problem of secure authentication for users of VR devices, but it is incremental as it explores initial prototypes without broad validation.
The paper tackles the need for CAPTCHA designs in virtual reality (VR) by proposing two new prototypes (task-driven and bodily motion-based) and testing them alongside traditional 2D CAPTCHAs in VR, finding them feasible in a user study with six participants.
With the popularity of online access in virtual reality (VR) devices, it will become important to investigate exclusive and interactive CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) designs for VR devices. In this paper, we first present four traditional two-dimensional (2D) CAPTCHAs (i.e., text-based, image-rotated, image-puzzled, and image-selected CAPTCHAs) in VR. Then, based on the three-dimensional (3D) interaction characteristics of VR devices, we propose two vrCAPTCHA design prototypes (i.e., task-driven and bodily motion-based CAPTCHAs). We conducted a user study with six participants for exploring the feasibility of our two vrCAPTCHAs and traditional CAPTCHAs in VR. We believe that our two vrCAPTCHAs can be an inspiration for the further design of CAPTCHAs in VR.