In a multi-reader environment, RFID system performance will be limited by the reader collision problem. RFID readers use different channels to minimise collision. However, with limited channels, the in-channel collision will happen. Using a path loss model, this paper predicts the safe distance between the readers before collisions occur in a same channel. This paper also explores the complicat...

We have explored the design and development of magnetically-resonant tag readers for application to tangible computer interfaces. To this end, we constructed a ringdown tag reader and a swept-frequency tag reader, both capable of real-time continuous interaction with multiple tagged objects. Although the ringdown reader worked well for smaller numbers of tags, the swept-frequency tag reader pro...

We have explored the design and development of magnetically-resonant tag readers for application to tangible computer interfaces. To this end, we constructed a ringdown tag reader and a swept-frequency tag reader, both capable of real-time continuous interaction with multiple tagged objects. Although the ringdown reader worked well for smaller numbers of tags, the swept-frequency tag reader pro...

Radio-frequency identification (RFID) is a tracking technology that enables immediate automatic object identification and rapid data sharing for a wide variety of modern applications using radio waves for data transmission from a tag to a reader. RFID is already well established in technical areas, and many companies have developed corresponding standards and measurement techniques. In the cons...

In this paper, an organic, fully recyclable and eco-friendly 20-bit inkjet-printed chipless RFID tag is presented. The operates in the near field implemented by means of chains resonant elements. characterization manufacturing process tag, printed with a few layers commercial organic ink on conventional paper substrate (DIN A4), are presented, functionality demonstrated reading it custom-design...

Radio Frequency Identification (RFID) technology uses radio-frequency waves to automatically identify people or objects. A large volume of data, resulting from the fast capturing RFID readers and a huge number of tags, poses challenges for data management. This is particularly the case when a reader simultaneously reads multiple tags and Radio Frequency (RF) collisions occur, causing RF signals...