Yes, we can complete your data with deduced or supposed data. For example, if you live in a single-family home and if, at the very same address, we have data from someone else, we deduce that this person is a member of your household. This means that we are guessing some familial connection between you or that we know your civil status. This information is interesting from a marketing point of view because, for example, it can help advertisers avoid sending the same mailing to different members of the same family.
Here's an overview of the most frequently asked questions within Data & Privacy.