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Many applications require that new data or revisions to data already in the tag, be entered
into the tag, while it remains attached to its object. The ability to read from and write data
to the tag while attached to its object is called in-use programming. Tags with this
capability are said to be re-programmable and are called read/write tags, memory cards or
memory modules.
SAW
Surface Acoustic Wave. A technology in which radio frequency signals are converted to
acoustic signals in a piezoelectric crystalline material. Variations in phrase shift ion the
reflected signal can be used to provide a unique identity.
Scanner
The antenna's, transmitter (or exciter) and receiver electronics integrated in a single
package called the scanner. They may be combined with additional digital electronics
including a microprocessor in a package called a reader.
Sensor
A device that responds to a physical stimulus and produces an electronic signal. See
Scanner.
Separation
Operational distance between two tags.
Signaling Technique
A complete description of the modulation, encoding, protocol, and sequences required to
communicate between two elements of a system.
Speed
The rate at which something occurs.
Tag
The transmitter/receiver pair or transceiver plus the information storage mechanism
attached to the object are referred to as the tag, transponder, electronic label, code plate
and various other terms. Although transponder is technically the most accurate, the most
common term and the one preferred by the Automatic Identification Manufacturers is “tag”.
Transponder
See Tag
Verify
To assure that the intended operation was correctly performed.
Write
The transfer of data to a tag, or the tag’s internal operation of storing the data; the term
may include reading back the data in order to verify the write operation.
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