An input device that interprets pencil and pen marks on paper media is called an optical mark reader (OMR).
It is also known as optical mark recognition (OMR).
An OMR is a device that consists of a light source and a light detector.
When light is passed through a sheet of paper, the detector recognizes the marks that the light does not pass through. This information is transmitted to the computer.
An optical mark reader (OMR) is a device used to quickly and accurately read the marked answers in examinations, surveys, etc.
Uses:
For evaluating examination answer sheets
For collecting data from surveys
In the vote counting process
In examinations containing multiple choice questions
