To reach respondents, Upsiide uses Lucid (Cint), which is one of the world's largest consumer panel networks. It connects Upsiide with sellers of sample through a centralised exchange. There are 3 major types of sample suppliers used:

​Survey Panels — A double opt-in community of respondents with detailed profiles who are engaged exclusively with survey opportunities
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Loyalty Panels — A double opt-in community of respondents with detailed profiles who are engaged with a multitude of offerings, including survey opportunities, app downloads, paid advertisement viewing, among others
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Non-Panel/Affiliates — An aggregation of various respondent sources, many of which come from double opt-in communities
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The selection process for the panel involves a thorough screening procedure to verify the authenticity and eligibility of respondents. Only individuals who meet specific demographic criteria and opt into participating in surveys are included in the panel. This ensures that researchers have access to a reliable and engaged respondent pool.
Lucid offers incentives and rewards to participants in its survey panels to encourage active participation and engagement. These incentives may include cash rewards, gift cards, sweepstakes entries, or other forms of compensation for completing surveys and providing valuable feedback.