The present work deals with RFID (radio--‐frequency identification) technology, which is nowadays mainly used to identify and track products, items or even employees. This technology facilitates the collection, storing and processing of information in order to, for instance, provide a higher stock visibility, eliminate manufacturing errors or increase production speeds. It is replacing more and more the less efficient bar code system, and its increasing importance in a various number of sectors, as well as its many different ways of using the technology, give reasons and motivation to look with more detail into the subject. As mentioned, bar code applications have many deficiencies and disadvantages in comparison with an RFID system they are becoming old--‐fashioned in the meantime, and are more rarely applied by companies in a multitude of industries. But RFID technology is not just meant to substitute the bar code system, it is a technology that opens new ways and new possibilities of affecting positively many industrial, administrative, stocking and transporting processes, among others that will be seen. This work is meant to be a reference for engineers and managers, providing in the first place, an introduction to get more familiar with the subject through description of the physical phenomena and technical characteristics of RFID. Further more, the work is meant to be used as a tool for managers and engineers to evaluate the implantation of RFID in their respective companies and business unites, which is the way to extract the most value out of this document. In this sense, the core and innovating part of this work will be the mapping table in the third chapter with specific results that could be used by any company to find the appropriate applications of RFID within their field of business. It will serve as a primary selection and evaluation tool that would precede future next steps to find out in which fields the application would be more profitable, like for example the deep economic analysis of the applications considered. Basically, the approach will be as follows. An evaluation table has been elaborated and structured to point out the relation between specific industry sectors, the advantages of the RFID technology and business units within a company such as supply chain, logistics and maintenance. A numerical value will be extracted to compare values with each other so as to support and propose the application of RFID in a specific business unit. Finally through interpretation of the relationship between advantages, business unites and industry sectors, it will be possible to extract valuable information from the table and be able to answer some concrete questions from it, which any manager would like to have solved in advance when dealing with the possibility of implantation of RFID technology in his company