Optical Mark reading (OMR) is a method of entering data into a computer system. Optical Mark Readers reads pencil or pen marks made in pre-defined positions on paper forms as responses to questions or tick list prompts. The OMR data entry system contains the information to convert the presence or absence of marks into a computer data file.

The OMR technology could be used if data is to be collected from a large number of sources simultaneously, a large volume of data must be collected and processed in a short period of time, information mainly comprises the selection of categories or "tick box" answers to multiple- choice questions.

Example of OMR based questionnaire form

The main advantages of OMR technology are as follows:

OMR scanning is fast: An OMR scanner can maintain a throughput of 2000 to 10,000 forms per hour. This activity can be controlled and processed by a single PC workstation, which can handle any volume the scanner can generate. Increasing the throughput simply requires upgrading the scanner.  Double entry is not required.

OMR scanning is accurate:  It consistently provides unmatched accuracy when reading data, exceeding the accuracy of expert key-entry clerks because it eliminates transcription errors.

OMR scanning is cost effective: With OMR technology, organizations can accomplish a wide variety of administrative tasks rapidly and accurately from a central location, with minimum initial and ongoing outlay of funds.

OMR scanning is easy to implement and support : Compared to many PC network installations, OMR scanners' need for ongoing technical support is minimal. OMR scanners also solve most system availability issues: data can be recorded on an OMR form even when a PC or network goes down. If questions arise, a source form is available to validate results.