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The National Institute of Standards and Technology[1] give the following definition: "Digital rights management is a system of information technology components and services along with corresponding law, policies and business models which strives to distribute and control intellectual property and its right." However, most existing DRM systems are designed for powerful protection. The portability of rights is restricted by close confinement of the DRM protection mechanism. The user's fair use rights are being violated. In this paper we will propose a protocol to achieve the fair use by using virtual software token.

In the Medical Emergency System, any moment of delay in an emergency such as ambulance dispatch, ambulance diversion and clinical handover communication can significantly reduce a patient's chance of survival. Without the disadvantage of centralized management, a new type of RFID application named 2G-RFID-Sys will be more efficient. It is suitable for the tagged ambulance dispatch management in a huge range. In this article, the prototype of 2G-RFID-Sys and the responsibility of each participant are refined. We take an example of applying the 2G-RFID-Sys to the Medical Emergency System, the traffic condition of the ambulance will be able to ensure.

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