RFID reader


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RFID reader

A transmitter/receiver that reads the contents of RFID tags in the vicinity. Also called an "RFID interrogator." The maximum distance between the reader's antenna and the tag vary, depending on application. Credit cards and ID badges have to be brought fairly close to the readers, somewhat like barcodes. For other applications, passive RFID tags can be read up to approximately 10 feet away, while active tags with batteries can be several hundred feet from the reader.

Linear vs. Circular Polarization
Linear polarized antennas transmit in a straight line, and their orientation to the RFID tags is critical. Such antennas are used for conveyer belts where tags can be adhered to the cartons in a consistent manner.

Circular polarized antennas radiate in a 90 degree pattern and are less sensitive to the tag's orientation on the package. The radio waves also move around obstructions better than linear antennas. See RFID, RFID tag, RFID printer and RFID-blocking wallet.


Close to the Reader
RFID-based credit cards, ID badges and keychain passes are designed to be brought close to the reader so that other RFID tags in the vicinity will not be accidentally detected. This RFID-based credit card uses Chase's Blink technology.








Reading Tags
RFID tags are read by stationary and handheld readers. At the top, the reader antennas are the square, yellow units on the left. The forklift in the middle has its own readers, and handheld readers like the one at the bottom are used in both retail and warehouse applications. (Images courtesy of Intermec Technologies, www.intermec.com)


Reading Tags
RFID tags are read by stationary and handheld readers. At the top, the reader antennas are the square, yellow units on the left. The forklift in the middle has its own readers, and handheld readers like the one at the bottom are used in both retail and warehouse applications. (Images courtesy of Intermec Technologies, www.intermec.com)


Reading Tags
RFID tags are read by stationary and handheld readers. At the top, the reader antennas are the square, yellow units on the left. The forklift in the middle has its own readers, and handheld readers like the one at the bottom are used in both retail and warehouse applications. (Images courtesy of Intermec Technologies, www.intermec.com)
References in periodicals archive ?
In the hardware part, many components are used such as RFID reader and tag, Arduino UNO, GSM Module etc.
The block diagram of the RFID reader that was tested within this experiment is provided in Fig.
ams (SIX: AMS), a manufacturer of high performance sensor and analog solutions, announced on Friday the signing of an agreement to divest NFC and RFID reader IP, technologies and product lines to STMicroelectronics (NYSE: STM).
The designers at Technology Solutions Limited also benefited from the high level of integration in the AS3993 as they worked to accommodate a complete RFID reader in a wearable form factor.
The Ha-VIS RFID ETB 86vl transponder is equipped with up to four digital inputs that can be securely read and evaluated with the help of an EPC Class 1 Gen 2 compatible RFID reader.
The Magellan MDR-4330AT is a robust benchtop RFID reader that will read tagged items in any orientation as well as when in densely packed containers, and offers 43 x 30 cm of effective 3D reading surface.
The RFID reader has access to a database that stores the IDs of all tags.
Using low-cost RFID readers and cryptographic deciphering, attackers can very easily read the information on these cards, allowing them to create aACAyclones' which can be used to syphon funds or gain unauthorised access.
In this paper, a novel dual circularly-polarized antenna design is adopted for RFID reader. The presented antenna structure is based on the aperture coupled patch antenna (ACPA) [25, 26], with separate Tx and Rx port.
Technology company Trimble (NASDAQ: TRMB) announced on Thursday the availability of a new UHF RFID Reader accessory for its Nomad handheld computer, the Trimble ThingMagic Reader.
TELECOMWORLDWIRE-April 3, 2012-austriamicrosystems announces new RFID reader ICs(C)1994-2012 M2 COMMUNICATIONS http://www.m2.com
RFID tags can be read when they are within the range of an RFID reader.