Product enhancement request for text fields : block copy/paste for compliance reasons

For compliance reasons, we, along with other Crédit Agricole entities, need to ensure that the content of the text field entered by the signatory is actually typed and not copied/pasted. In the text field settings section, we would like to be able to add a checkbox to prevent copy-pasting within this text field. Indeed, in case of a litigation on loan guaranties, we need to prove that the signatory typed the text and not copied/pasted a text they received by email or Word. The associated business risk is very significant for us.