OMR or Optical Mark Recognition is a system that has the ability to read and recognize dark marks made on special types of sheets. OMR sheets are distinguished from the four index points on its corners. It is these index points that make it possible for the OMR software to read dark marks made on the bubbles by people. The uses of OMR sheets are many. Mostly, they are used for examinations that have multiple-choice questions. Apart from this, they are also used as survey forms, admission forms, assessment forms, questionnaires, feedback forms, attendance sheets, etc.