Optical Character Recognition(OCR) : It was based on the matching of scanned characters to standards held in memory. A standard was required for each, font to select the correct for it and match the characters.
Omni font OCR : It is based on the use of techniques from artificial intelligence and there also known as intelligent character recognition(ICR). Each character is identified by the presence of absence of sets of particular features that are independent of typeface and font size.
Forms recognition : It enables the system to switch to the correct application software which can then be used to defect signatures, incorrectly completed forms & so forth.