Radio frequency identification systems with passive tags dramatically increase the ability of an organization to acquire a vast array of data about the location and properties of any entity that can be physically tagged and wirelessly scanned within certain technical limitations. However, if multiple tags are to be identified simultaneously, messages from the tags can collide and cancel each ot...

In some applications, the bearer of a radio frequency identification (RFID) tag might change, with corresponding changes required in the RFID system infrastructure. We survey the security requirements for RFID tag ownership transfer, and propose novel authentication protocols for tag ownership and authorisation transfer. The proposed protocols satisfy most of the requirements that we present, a...

In today’s global competitive environment, organizations face a variety of challenges. Many organizations are adopting radio frequency identification technologies (RFID) as part of their information supply chains. These technologies provide many benefits to the organizations that use them. However, how these technologies affect consumers and their willingness to adopt the technology is often ov...

This paper investigated various indoor positioning techniques and presented a comprehensive study about their advantages and disadvantages. Infrared, Ultrasonic and RF technologies are used in different indoor positioning systems. RFID positioning systems based on RSSI technology are the most recent developments. Positioning accuracy was greatly improved by using integrated RFID technologies.

With the increased radio frequency identification (RFID) applications different authentication schemes have been proposed in order to meet the required properties. In this paper we analyze the security of a server-less RFID authentication protocol which is proposed by Deng et al. in 2014. Deng et al. proposed an improvement over Hoque et al. protocol to overcome its vulnerability against data d...

Radio Frequency Identification or RFID is a broad term that is used for classifying technologies that use radio waves to automatically recognize objects and people (Greene, 2005). This radical concept came into existence in 1940s (Landt, 2001), when it was first used in World War II by British aircrafts to identify friendly airplanes returning from their missions. RFD has the ability to track s...

High gradients require high peak powers. One possible way to generate high peak powers is to generate a relatively long pulse at a relatively low power and compress it into a shorter pulse with higher peak power. It is possible to compress before DC to RF conversion as is done for the relativistic klystron or after DC to RF conversion as is done with SLED. In this note only radio frequency puls...

DEFINITION Radio Frequency Identification (RFID) exists as a distinct subset of the larger family of automated identification technologies that includes things like bar codes, visual scanning devices and biometric readers. RFID is a means of automated identification that features electronic tags used both to store data and to act as transponders for sending the stored data as the payload in ele...

Radio frequency identification (RFID) is a group of technologies used to identify or track electronic devices (RFID tags or transponders), typically applied to or incorporated into products, animals, or even persons, using radio waves or electromagnetic fields. RFID systems have various applications, with the most prevalent one being enterprise supply chain management to improve the efficiency ...

We describe the nature of the interference challenges facing radio astronomy in the next decade. These challenges will not be solved by regulation only, negotiation and mitigation will become vital. There is no silver bullet for mitigating against interference. A successful mitigation approach is most likely to be a hierarchical or progressive approach throughout the telescope and signal condit...