Establishing parent fields

When you process pages with check box options, you must define the check box options as subfields of a parent field. You must also outline the subfields and the parent field when you are drawing the recognition zones.

You defined subfields for the options on the rental agreement page in the TravelDocs application. When you define the recognition zones, you need to define the positions of the parent fields and the subfields.

It might seem easier to draw the child field zone within the check box outline. However, recognition succeeds only if the check boxes on the runtime page align perfectly with the fingerprint image. Even a slight misalignment can result in a false positive. The best approach is to draw the recognition zone around the check box.

You also defined parent fields and subfields on the optional insurance page, although in this case you created a parent field for each check box. When you define the zones, you need a zone for each parent and each subfield.