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RFID Essentials
book

RFID Essentials

by Bill Glover, Himanshu Bhatt
January 2006
Intermediate to advanced content levelIntermediate to advanced
278 pages
12h 2m
English
O'Reilly Media, Inc.
Content preview from RFID Essentials
236 APPENDIX A
The physical realization of the GRAI-96 begins at the MSB with the header 0011 0011 (8
bits) and concatenates the filter value (3 bits), for which we will again use the value 2.
Next comes the partition value (3 bits). For our example, this value would be 4. The Com-
pany Prefix is next (27 bits), followed by the Asset Type (encoded in 17 bits). The check
digit is discarded, as it was in the previous encodings. Lastly, we encode the Serial Number
as 38 bits. The hex value for our example would thus be 3354257BF40C0E40000849EA,
which, with the CRC, is 4FF73354257BF40C0E40000849EA.
GS1 GIAI Encoding
The Global Individual Asset Identifier (GIAI), also known as Application Identifier
“(8004),” provides a unique identifier for assets. Whereas GRAI numbers identify assets
that may be loaned or rented out, the GIAI identifies assets that typically do not leave the
possession of the owner. For example, a lathe might have a GIAI number for program
maintenance and warranty tracking, or an office chair might be identified with a GIAI for
enterprise resource planning.
The GIAI is composed of the usual Company Prefix followed by an Individual Asset Refer-
ence. In Figure A-6, “(8004)” is the Application Identifier for GIAI, the Company Prefix is
007654321, and the Individual Asset Reference is 12345. Note that there is no check digit.
The GIAI pure identity can be encoded using the URN notation ...
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Publisher Resources

ISBN: 0596009445Catalog PageErrata