Duplicate Number® Search

The Duplicate Number® Search is a unique and powerful tool for detecting respondents who do not meet a study's screening requirements or are interviewed too often. Developed over 20 years ago for General Foods (now part of Kraft Foods), it is now used as a standard validation technique by many consumer product manufacturers, research suppliers and data collection agencies.

Duplicate Email™ Search

The Duplicate Email™ Search, scheduled to launch in the 1st quarter of 2005, is the first-ever third-party validation technique for helping to ensure the respondent-level quality of Internet research.