At times SHG blends our own panel with others. To this end we have developed our own in-house technology called “The Hub”. “The Hub” enables us to de-duplicate both within and across sources and enables SHG to ensure that appropriately stratified samples can be replicated over time. In addition, SHG institutes a variety of validation techniques including proxy server detection, IP address verification, past survey participation history, survey time testing, and use of unique survey links on each and every survey. We employ the industry standard of Relevant ID.