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A Novel Gesture-based CAPTCHA Design for Smart Devices.

Jiang, N. and Tian, F., 2013. A Novel Gesture-based CAPTCHA Design for Smart Devices. In: 27th International British Computer Society Human Computer Interaction Conference (HCI 2013), 9--13 September 2013, Brunel University, UK.

Full text available as:

bhci_cameraready_213.pdf - Accepted Version



CAPTCHAs have been widely used in Web applications to prevent service abuse. With the evolution of computing environment from desktop computing to ubiquitous computing, more and more users are accessing Web applications on smart devices where touch based interactions are dominant. However, the majority of CAPTCHAs are designed for use on computers and laptops which do not reflect the shift of interaction style very well. In this paper, we propose a novel CAPTCHA design to utilise the convenience of touch interface while retaining the needed security. This is achieved through using a hybrid challenge to take advantages of human’s cognitive abilities. A prototype is also developed and found to be more user friendly than conventional CAPTCHAs in the preliminary user acceptance test.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:CAPTCHA. Human Interactive Proof (HIP). Gestural interaction. Mobile devices. Ubiquitous computing.
Group:Faculty of Science & Technology
ID Code:21541
Deposited By: Symplectic RT2
Deposited On:04 Nov 2014 11:14
Last Modified:14 Mar 2022 13:50


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