A New Method to Design a CAPTCHA Based on Simultaneous Contrast and Persistence of Vision

Nirwan Ansari (Inventor), Christopher Neylan (Inventor), Amey Shevtekar (Inventor)

Research output: InnovationPatent

Abstract

https://www.google.com/patents/US8925057

Original languageEnglish (US)
StatePublished - Jul 2018

Keywords

  • Patent Issued

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