发明名称 SYSTEM AND METHOD FOR PREVENTING DUPLICATE SURVEY ATTEMPTS
摘要 A system and method for detecting and avoiding attempts at taking the same survey by the same respondent. A respondent is assigned a Global unique identifier (GUID) and the encrypted global identifier is inserted in a "cookie" stored on the user's computer. Each time a respondent attempts to take a survey, a respondent is identified using a mechanism such as e-mail, computer identifier or the like and a Survey Management system checks to see if this respondent should have a global identifier encoded in a cookie. Based on this review, the Survey Management system can determine whether or not this particular user, whether using different computer systems or under different user accounts has previously taken the survey.
申请公布号 US2009307033(A1) 申请公布日期 2009.12.10
申请号 US20090470088 申请日期 2009.05.21
申请人 GREENFIELD ONLINE 发明人 PAIS IVAN S. J.;PATEL NITIN;ST. PIERRE DAVID G.
分类号 G06Q10/00;G06F17/30 主分类号 G06Q10/00
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