FR-CAPTCHA: CAPTCHA Based on Recognizing Human Faces
Crossref DOI link: https://doi.org/10.1371/journal.pone.0091708
Published Online: 2014-04-15
Update policy: https://doi.org/10.1371/journal.pone.corrections_policy
Goswami, Gaurav
Powell, Brian M.
Vatsa, Mayank
Singh, Richa
Noore, Afzel
License valid from 2014-04-15