[en] The Malaysian Nuclear Agency's role is to assist Atomic Energy Licensing Board (AELB) in providing technical services for testing the functionality of irradiation apparatus for cases to be prosecuted for violation of Act 304. Among the common offenses committed by consumers is selling, possessing, and operating irradiation apparatus without a valid license. A qualified specialist performed the technical test to determine whether the case item could emit ionizing radiation and function properly as a radiation device. Active and passive dosimeters such as survey meters, TLD dosimeters, OSL dosimeters, and diagnostic radiology films are among the options used for validation testing. However, the OSL nanoDot dosimeter is the most practical and effective because it is easy to use and compatible with all irradiation apparatus tested. The advantages of using OSL nanoDot in the confirmation test of the presence of ionizing radiation are presented further in this paper. (author)