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Specimen Barcode and Labeling Guide: Difference between revisions
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Specimen Barcode and Labeling Guide (view source)
Revision as of 10:17, 6 February 2015
, 6 February 2015→Barcodes and GUIDs
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Groups have achieved global uniqueness by using an identifier strategy coupled with unique barcode symbology. For instance, UPC barcode labels (those that we find on products that we buy), are created with a combination of identifiers that are unique within the UPC domain and a format for the barcode symbols that is used only in that domain. An international agreement divides up the possible identifiers and assigns a range of numbers to an issuer. The barcode symbol has a specific format that is recognized by scanners as UPC. | Groups have achieved global uniqueness by using an identifier strategy coupled with unique barcode symbology. For instance, UPC barcode labels (those that we find on products that we buy), are created with a combination of identifiers that are unique within the UPC domain and a format for the barcode symbols that is used only in that domain. An international agreement divides up the possible identifiers and assigns a range of numbers to an issuer. The barcode symbol has a specific format that is recognized by scanners as UPC. | ||
The UUID (universally unique identifier) scheme is a strategy for generating and using large numbers (128 bit hexadecimal | The UUID (universally unique identifier) scheme is a strategy for generating and using large numbers (128 bit hexadecimal numbers) as identifiers. The UUID generation strategy assures uniqueness. A UUID string is typically a combination of hexadecimal digits and dashes. For example: f47ac10b-58cc-4372-a567-0e02b2c3d479. | ||
'''In general''' | '''In general''' | ||