This page is part of a working prototype. Nothing on this deployment belongs to a real seller and no real person's details have been entered into it.
What a listing page records when it is live: a row for each scan of the printed code, a row for each time a page finished loading, a row for each share, and a row for each message a visitor sends the owner. No person is identified, located or tracked. There is no column for a name attached to a scan, for a device identifier, or for a location.
What the owner sees: their own counts and their own messages. What we do not do: sell, rent or pass a visitor's details to an agent, a lender or anyone else.
A seller who wants their page and its rows deleted can say so and both go.