Patent ID: 8718535
Filing Date: 2014-05-06
Classification: G06K

Abstract:
1. A scannable form comprising: at least one response column parallel to a first longitudinal edge of the scannable form; a control mark column parallel to the first longitudinal edge and parallel to the response column; and a broken ladder, independent of the control mark column, comprising a preprinted frame of two substantially parallel lines and locations along the two substantially parallel lines for a plurality of rungs corresponding to encoded information that identifies a person assigned to the scannable form, wherein the preprinted frame of the two substantially parallel lines is configured to be scanned by a test scoring machine to cause detection of the broken ladder on the scannable form, and a top rung of the broken ladder is positioned along the two substantially parallel lines so that the top rung is positioned to be a first rung that is scanned by the test scoring machine for the broken ladder, and a bottom rung of the broken ladder is positioned along the two substantially parallel lines so that the bottom rung is positioned to be a last rung that is scanned by the test scoring machine for the broken ladder.