How to add a Custom field that requires a certain value in civicrm contribution page?

Question

in my Contribution Page I'd like to ask the donor to accept some privacy rules. For that I'd like to add a custom field into a Profile, add that to the Contribution Page (that works) and only accept the form if the yes/no custom field is answered with a yes (radio button).

Is that possible? Is there some other possibility to implement my use case in a Contribution Page?

Answer 1

A possible solution is to not use a yes/no-type of Custom Field, but an alpha-numeric one, choose check-box with only one answer as Field Input Type and set the Custom Field as required in the Profile that is added to the Contribution Page.