MB-CAPTCHA combines images of human faces with fingerprints and other face parts on a complex background.
To solve MB-CAPTCHA, users must tap or click on the items indicated by instructions included in the CAPTCHA image.
In testing, humans achieved 84% accuracy in solving MB-CAPTCHA images.
- B. M. Powell, A. Kumar, J. Thapar, G. Goswami, M. Vatsa, R. Singh, and A. Noore, “A Multibiometrics-based CAPTCHA for Improved Online Security,” in Proc. IEEE 8th Int. Conf. on Biometrics: Theory, Applications and Systems, Niagara Falls, NY, 2016. PDF Publisher's Website