In the 1930s, Richard Warren at IBM experimented with optical mark sense systems for test scoring, as documented in US Patents 2, 150, 256 ( filed in 1932, granted in 1939 ) and 2, 010, 653 ( filed in 1933, granted in 1935 ).
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Automatic form input systems use different types of recognition methods such as optical character recognition ( OCR ) for machine print, optical mark reading ( OMR ) for check / mark sense boxes, bar code recognition ( BCR ) for barcodes, and intelligent character recognition ( ICR ) for hand print.
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