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In the diploma thesis Radiofrequency Identification (RFID) is used for labeling individual products. It is based on the usage of radio waves. In the supply chain, RFID technology could replace a barcode labeling because it has a lot of advantages like: easier and faster reading on large distances, storing data on RFID tags, identification of larger number of objects at the same time and others. There exist many different RFID systems available for identification that include RFID readers, tags and antennas for capturing data. For its commercialisation in supply chain EPCglobal IncTM standardisation organization is responsible. It operates under the auspices of GS1 (The Global Language of Business). The purpose of RFID standards is to ensure global connectivity of components in RFID systems. The work consisted of introduction and testing of labeling different food products with RFID labels. We divided them into several groups according to packaging forms and ingredients. We tested them in HF (High Frequency) and UHF (Ultra High Frequency) frequency bands which represent two different options of usage this technology. Our goal was to determine the effect of individual materials and to check how they affect on the reading distances. It was discovered that in some cases of products the labeling was inappropriate and is not practicable for the use of RFID tags.