Alignment - The orientation of the tag in relationship to the reader.

Antenna - A device that conducts electromagnetic energy. In RFID, an antenna radiates energy in the radio frequency spectrum to and from the RFID tag.

Auto-ID Center - A non-profit organization which led the development of a global network for tracking goods academia, that pioneered the development of an Internet-like infrastructure for using RFID to track goods globally.

Automatic Identification - The broad term which encompasses bar coding, RFID, and other electronic technologies that electronically identify and track goods.

Bar Code - A standard method of identifying items based on lines of varying widths and spacing that are visually read by a scanner. The UPC bar code standard provides a way of identifying manufacturers and product categories. Other types of bar codes are used for shipping and other kinds of item identification. See also Scanner and Universal Product Code (UPC).

Bidirectional - In RFID, a tag that can be read or written from either side.

Capacity - The amount of information that can be programmed into a tag. This may represent the bits accessible to the user or the total number including those reserved to the manufacturer e.g. parity or control bits.

Controller - See Multiplexer

Data Transfer Rate - The rate at which data are transferred between the reader and a tag, generally measured in bits per second (bps).

EAN International - The international organization responsible for administering bar code standards.

Electronic Product Code (EPC) - An identification standard created by the Auto-ID Center that provides additional information to existing bar codes. The EPC can identify manufacturers, product categories, and individual items. See also Auto-ID Center and Bar Code.

EPC Discovery Service - A service from the EPCglobal Network that allows companies to search for every reader that has read a particular EPC tag. See also EPCglobal.

EPC Information Service - A network infrastructure of the EPC Network that allows companies to store EPC data in secure databases on the Web. Companies can set the level of information access for different types of organizations, from supply chain providers to manufacturers, to everyone.

EPCglobal - A non-profit organization with the mission of commercializing EPC technology. The Uniform Code Council and EAN International, which set and maintain bar code standards in North America and internationally, set up EPCglobal.

EPCglobal Network (or EPC Network) - The Internet-based technologies and services designed for EPCs.

Error Rate - The number of errors divided by the number of transactions.

European Article Numbering (EAN) - The bar code standard used throughout Europe, Asia, and South America, administered by EAN International.

Factory Programming - The manufacturer’s setting on a read-only tag or chip or peripheral device.

Field Programming - The programming of information into a tag after shipment by the manufacturer, either by an OEM customer or end user. Field programming is often related to the tag’s target application.

Firmware - Start up and input-output instructions “burned onto” a chip in RFID-enabled printers and other devices.

Flat Panel Antenna - Flat antennas that are generally made of metal plate or foil and embedded in a label or other material.

High Frequency Tags - RFID systems that operate at 13.56 MHz with a typical maximum read range of up to 3 feet (1 meter).

Inlay - RFID hardware mounted on label material. Inlays provide the RFID portion of “smart labels”. See also Smart Label.

International Standards Organization (ISO) - An international association that manages the process of setting global standards for communications and information exchange.

License Plate - A term that denotes a simple RFID technique that carries only a serial number on tags. The serial number is associated with information in a database.

Low Frequency Tags - RFID systems that operate at about 125 kHz with a typical maximum read range of up to 20 inches (508 mm).

Misread - A mismatch between data as read by the reader and the data programmed on the corresponding tag.

Multiplexer - An electronic device used to support multiple scanners or antennas. Multiplexers essentially manage RFID traffic. Sometimes spelled “multiplexor".

Multiread - The ability of a reader or other RFID device to read many individual tags at the same time.

Nominal Range - The normal range at which a system can operate reliably, under normal conditions.

Orientation - Placement of a tag in relationship to the reader or scanner.

Passive Tags - The most common RFID tags, in which a reader transmits an energy field that “wakes up” the tag and provides the power for the tag to operate.

Penetration - Refers to the ability of a particular radio frequency to pass through packaging and other materials.

Power Levels - A measure of the amount of RF energy radiated from a reader or active tag, usually measured in volts/meter.

Printer/Encoder - The device used to generate smart labels. They both print bar-coded labels and encode RFID tags embedded in the labels. See also Smart Label.

Programmability - The ability to enter and store data into a tag.

Programming - Adding information to or changing information stored in a tag.

Radio Frequency Identification (RFID) - A method of transmitting information using radio waves. RFID systems typically consist of a tag that contains information identifying an item or specifying a condition or state. A reader communicates with the tag and reads the information programmed into its memory.

Range - The distance at which a tag can be successfully read or written to by the reader.

Read Back - The process of retrieving the information stored on an RFID tag.

Read Only - See Factory Programming.

Read Range - The distance from which a reader can communicate with a tag.

Read Rate - The maximum rate at which data can be read from a tag, generally expressed in bits per second (bps).

Read/Write - Refers to tags that can receive new data while they are attached to product, such as tags that store a record of shipment information.

Readability - Refers to the ability of a reader to obtain data from a tag, generally under difficult conditions.

Reader - The device that retrieves information from tags using radio waves. Readers generally receive data from tags and transmit data to host computers or peripheral devices, such as a printer.

Reader/Writer - A device that can both retrieve information from a tag and write information to a tag.

Scanner - A device that reads bar codes.

Sensor - A device that produces an electronic signal in response to something in the environment.

Separation - Refers to the distance between two tags or the distance between a tag and a reader.

Smart Label - Refers to a label that usually contains both a traditional bar code and an RFID tag. As bar codes are printed on smart labels, information is also encoded into the RFID tag by the printer.

Tag/Transponder - A combination of a microchip and antenna that can be programmed with information to identify items and transmit that information to a receiver. Some tags can also receive new information, such as location information during shipment.

Ultra-High Frequency Tags - RFID systems that operate at multiple frequencies, including 868 MHz (in Europe), a band centered at 915 MHz, and 2.45 GHz (microwave). Read range is typically 3 to 10 feet (1 to 3 meters), but systems operating in the 915 MHz band may achieve read ranges of 20 feet (6 meters) or more.

Uniform Code Council (UCC) -The organization in the United States that sets and maintains the Universal Product Code (UPC) bar code standard.

Universal Product Code (UPC) - The barcode standard used in North America. See also Uniform Code Council.

Write - The transfer and, generally, verification of data to a tag.

Write Rate - The rate at which information is transferred to a tag, written into memory and verified.

XML - eXtensible Markup Language (XML): A widely accepted way of sharing information over the Internet in a standard, generic way.