PROBLEM TO BE SOLVED: To provide an identification code verifying device, an identification code verification system, a method of verifying an identification code, and an identification code verification program, which easily perform verification when separately performing printing and verification of an identification code and verifying identification codes of various types.SOLUTION: The identification code verifying device includes: a verification data identification information recognition unit (133) for recognizing verification data identification information corresponding to dot patterns (52b, 53b) acquired by print information acquisition unit (132, 132C); and a verification unit (134) for verifying barcodes (52c, 52d, 53c) acquired by the print information acquisition unit (132, 132C) by using verification data corresponding to verification data identification information recognized by the verification data identification information recognition unit (133).
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