This paper discusses a RF power harvester optimized for sensitivity and therefore wireless range, for applications requiring intermittent communication. The RF power harvester produces a 1V output at -32dBm sensitivity and 915MHz. This is achieved using a CMOS rectifier operating in the subthreshold region and an off-chip impedance matching network for boosting the received voltage. Equations p...

Radio-Frequency Identification (RFID) technology enables sensors to efficiently and inexpensively track merchandise and other objects. The vast amount of data resulting from the proliferation of RFID readers and tags poses some interesting challenges for data management. We present a brief introduction to RFID technology and highlight a few of the data management challenges.

Proximity to Metal Metal presents a particular challenge to RFID. Most RFID tags show reduced performance when used near metal. Generic tags placed directly on a metal surface will likely not read at all. However, advanced RFID tags are specifically designed for use on or near metal. These tags typically have a special housing incorporating a gap of controlled width between the tag’s antenna an...

In this paper, we propose intuitive interaction with other people through mobile devices. By toughing RFID tag attached to each device, user can select nearby people in the most natural way, and this physical interaction promotes social connections. We implemented file sharing application and supporting framework to demonstrate the interaction scheme.

This paper presents fabrication of RFID tags, especially antennas for HF band (13.56 MHz), on cheap flexible substrates. The physicochemical, geometrical, DC and AC electrical properties as well as long-term stability (under thermal, moisture-thermal and mechanical exposures) have been characterized for several low-temperature polymer thick-film conductive films made on various paper or foil su...

The integration of RFID technology and mobile smart device stimulates the daily increasing popularity of mobile RFID-based applications, which makes its way to become a new hot zone for research and development. Current RFID authentication schemes are not viable to use in mobile RFID environment. The authentication schemes result in computing load to the low cost tag and provide insufficient pr...

With a range of documented attacks against RFID systems a majority of the current literature is focused on the encryption of the communication. This paper addresses such attacks by proposing alternative means of protection through utilising some of the same methods that may be used to attack these systems. The proposed methods would allow for increased security within a range of RFID applicatio...

The next generation of Israeli elections is proposed to run on an e-voting system which uses near-field RFID tags instead of plain paper ballots. In 2010 we investigated the system and identified several potential attacks which can be launched against the proposed system. In this work we report on the actual implementation of two of these attacks – zapping and jamming. These attacks have a crit...

Recent automobiles are equipped with compact appliances of many functions. These appliances provide comfortable time and space for a user while those operations lead to a danger for safety driving. We assume that if operations are eliminated using contexts of a driver and fellow passengers, accidents can be avoided. We propose an intelligent environment that can acquire a context such as operat...

Multiresonator is an essential component of spectral signature based chipless RFID tags [4–33]. This chapter deals with the design and development of coupled bunch hairpin resonator for multiresonating circuit. A brief discussion on hairpin resonator and evolution of coupled bunch hairpin resonator are presented. The data encoding technique applied is also illustrated in detail. Two disc monopo...