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RFID is a technology being adopted in many business fields, especially in the medical field. This work has the objective to present a system for automation of a hospital clinical analysis laboratory. This system initially uses contactless smart cards to store patient's data and for authentication of hospital employees in the system. The proposed system also uses RFID tags stuck to containers containing patient's collected samples for the correct identification of the patient who gave away the samples. This work depicts a hospital laboratory workflow, presents the system modeling and deals with security matters related to information stored in the smart cards.

The quick progress in technology has brought new paradigms to the computing area, bringing with them many benefits to society. The paradigm of ubiquitous computing brings innovations applying computing in people's daily life without being noticed. For this, it has used the combination of several existing technologies like wireless communications and sensors. Several of the benefits have reached the medical area, bringing new methods of surgery, appointments and examinations. This work presents telemedicine software that adds the idea of ubiquity to the medical area, innovating the relation between doctor and patient. It also brings security and confidence to a patient being monitored in homecare.

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RFID (Radio Frequency Identification) is an emergingtechnology, for automatic identification and tracking, to provide increased efficiency and decrease operating costs in industry and supply chain. However, existing international standards not include security specifications, which resulted in appearance of security threats. Many efforts have been done in this area. However, the key management protocols proposed are unsafe or impractical for most RFID systems. This paper presents a novel approach of a key management protocol with mutual authentication for RFID systems. This protocol is an extension of RFID systems for the protocol proposed by Kinzel and Kanter [6], adding to the original protocol: a mutual authentication and the definition of frames. Through simulations it was possible to observe that the security level of the proposed protocol is a function only of the computational resources of the entities in the RFID system.