Methods for presenting and determining the efficacy of progressive pictorial and motion-based CAPTCHAs | Patent Publication Number 20090328150
US 20090328150 A1Patent NumberUS 08752141 B2
Application Number12494083
Filled DateJun 29, 2009
Priority DateJun 27, 2008
Publication DateDec 31, 2009
Original Assignee
Current AssigneeHuman Differential Intelligence Llc
Inventor/ApplicantsJohn Nicholas Gross
JOHN NICHOLAS GROSS
JOHN NICHOLAS GROSS
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