OCR / OCR-affixed / Odd Parity Character

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OCR

Optical Character Recognition. The letters used for the purpose of optical recognition.

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OCR-affixed

In Japan, before the popularization of barcode, many industries (books, household electrical appliances, sports equipments, toys, etc.) and some retailers already employed POS.
When introducing POS by barcode, for coordination of OCR and barcode, both the JAN symbol and the OCR letters are shown. This is called OCR-affixed JAN symbol.

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Odd Parity Charactor

Character in EAN symbol, which sum of black bar modules is odd (not even). (See flag).