I am looking for a way to construct a wiki page that ordinary users (anonymous) can fill in in order to support the org that runs the Tiki.
Therefore I need a couple of checkboxes (for the amount to be donated, for instance), one free numerical field (also for donations) and some free text fields like name & address.
Then I need some structured fields like Zip and IBAN.
In the first, easy, version this shall lead to a button that simply calls a mailto with the values pre-filled, directed at the org. So in essence a digital twin of a form printed in a magazine.
In the second, more sophisticated version these data shall be stored in the DB. Trackers seem to be a solution, but this would violate the PCI DSS directive (it is a violation to store credit card information of persons in the same database as the base data like names & addresses).
Calculating the check digits of IBAN (3rd and 4th digit) to eliminate typos by the user would also be helpful, or detecting wronly formatted Zip codes.