Optical Mark Reader
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This is a technology that reads hand drawn marks such as small circles or rectangles. Marks are place on forms such as test, survey or questionnaire.
Advantages of optical mark reader: i. data is quickly and usually accurately captured ii. no machine is needed to complete the source document iii. the data preparation stage is largely eliminated Disadvantages of optical mark reader i. The mark/no mark system can only be used if there are a limited number of alternatives for each response ii. The marks must be accurate and clear or they will be misread. iii. The source documents must be handled with care. iv. Some data preparation staff will still be needed to correct and reenter misread and rejected document. |