DISTINGUISH VALID USERS FROM BOTS, OCRs AND THIRD PARTY SOLVERS WHEN PRESENTING CAPTCHA
摘要
Embodiments of the present invention relate to a method of providing an automated public Turing test to a client display system. The method includes providing an image having a plurality of random characters, as well as providing a browser code to the client, whereby the browser code is adapted to restrict display of the image to only a predetermined portion of the image. The method further includes detecting a client response to receiving the predetermined portion of said image.
申请公布号
WO2012107879(A3)
申请公布日期
2012.11.08
申请号
WO2012IB50551
申请日期
2012.02.07
申请人
SITE BLACK BOX LTD.;RAPAPORT, SHAY;AZARIA, EREZ;SCHWARTZ, OMRI