Creating a Machine-Readable Form/Checkmark Field

Checkmark fields are machine-readable form elements, usually check boxes, that respondents mark; squares, circles, and underlines are common shapes.

A checkmark field is an element of a machine-readable form (usually a square called a “check box”) in which a mark should be made by the person who completes the form.

A checkmark field usually has an accompanying text which explains the use of the checkmark.

A checkmark field

Possible shapes of checkmark fields are shown in the table below

Square
Circle
Underline

Other shapes are also possible, e.g. polygons, ovals, etc.