Read Range   Read Rate
Distance from which a reader can communicate with a tag. Factors that affect the read range of a passive tag include frequency, reader power and antenna design.

Bar codes: A bar code verification term. The ratio of the number of successful reads to the total number of attempts.
RFID: Indicates the number of tags that can be read within a given length of time. Read rate is also used as the maximum rate at which data can be read from a tag.

Read-only   Read-write
Data stored in read-only RFID tags cannot be changed by a reader.
Tags that can store and use new information. Can be changed many times by a reader.
Reader   Reflectance
Hardware that communicates with RFID tags. A reader has one or more antennas attached to it which emit radio waves and receive signals back from the tags. Many readers have the ability to write data as well as read data. See Interrogator.
A bar code verification term. The ratio of the amount of light which is reflected back from the white spaces of a bar code during scanning to the amount of light reflected under similar illumination conditions.
Resolution   RF (Radio Frequency) network
The narrowest element dimension which can be recognized by a particular scanning device or printed with a particular device or method.
A technology that connects devices using electromagnetic waves instead of physical cabling.
Radio Frequency Identification. A method of uniquely identifying items by transmitting and receiving electromagnetic (radio) waves.
Test for new RFID solutions. Pilots might be run by companies to help meet mandate requirements or to test new applications of RFID technologies.
Ribbon   Rollout
A plastic tape with several layers of material, one of which is thermal wax, that when melted, produces the visible marks on the labels installed on a thermal transfer printer.
Pilots that indicate a good return on investment (ROI) are then put into expanded deployment. This benefits the testing company and the RFID industry as a whole.
RS-232   RuBee
A common communication interface standard that permits DTEs and DCEs to connect successfully.
RTLS (Real Time Location System)
Also called Real Time Locating Systems, RTLS tracks and identifies the location of objects in real time using badges or tags attached to or embedded in objects. Readers receive the signals from these tags to determine their locations.
wo way wireless protocol that uses Long Wave (LW) magnetic signals to send and receive data packets in a local regional network. Similar to WiFi and Bluetooth, but RuBee uses a lower frequency, slower carrier. RuBee, however offers low power consumption and operates near steel and water, making it practical for sensors, controls, or actuators and indicators.