February 201 why are there different kinds of barcodes
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Transcript of February 201 why are there different kinds of barcodes
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Why are there Different Kinds of Barcodes?
Why Isn’t there one super-symbology
that can do it all?
(Because nobody can define “all” for all time.)
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Problems and Solutions Evolve
• Barcodes were invented
to solve a specific problem
in the grocery industry
UPC solved a problem in the 1970’s but is now threatened by its own success as the system approaches its numbering capacity.
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Problem = Opportunity
• Old symbologies evolve into variations:
The original UPC now has evolved into many specialty types including UPC-A, UPC-E,
EAN-13, EAN-8, Bookland, BIPAD and NDC 3
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Problem = Opportunity
New symbologies solve problems old symbologies cannot solve
• Limited available space on labels • Limited data capacity • Numeric-only encoded characters • Error detection only in some 1D types
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Evolution of Solutions
Linear barcode evolution
• Code 39
alpha-numeric encoding
• Code 128 included upper
and lower case and
special characters
• Code 128 space efficiencies
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1D Symbol Evolution
Stacked Linear Symbologies
• PDF417
• GS1 Databar
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Evolution of Solutions
2D barcode evolution
• Increase data capacity
• Decrease footprint
• Error correction
• Tolerant to very low reflectivity applications
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2D Symbol Types
QR Code
Data Matrix Code
Aztec Code
Maxi Code
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2D Symbol Evolution
Microsoft Tag
Ultra Code
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The Future
Problems that are now being solved:
• Hidden /encrypted data: encoding with color
• Invisible barcodes: UV and digital watermark
• Web-validation security: cloud lookup
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Different Kinds of Barcodes
There are different kinds of barcodes for a changing world with emerging problems.