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All about pdf417 - 2D Barcodes_pdf.md
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All about pdf417 - 2D Barcodes_pdf.md
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# All about pdf417 - 2D Barcodes
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---
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FTA TECHNOLOGY
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CONFERENCE
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2D BARCODES AT A GLANCE
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Carlos Gonzalez
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CTO Dataintro Software
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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ABOUT 2D BARCODES
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• Appeared in 1988 (with Code 49 - Intermec)
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• Used in a variety of environments
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(surgical, electronic parts, transportation, stamps, taxes)
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• PDF 417 (Symbol - 1990)
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• More than 20 different 2D symbologies (2005)
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In 2003, Missouri started a new era of tax tools
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In 2004, AL, AZ, OK, MD, LA
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Our Phylosophy: 1 FORM = 1 BARCODE
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2D BARCODES = SAFETY NET
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1
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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1D & 2D BARCODES?
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2
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ycnadnudeR Datamatrix PDF
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3 of 9 417
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1D Reading
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2D Reading
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•ECL in form of checksum •ECL in form of codewords
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•Reads with Laser •Reads with Imager (CCD)
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•Small capacity •Large capacity(*)
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•Used as a Key to DB •Portable Database
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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THE WORLD OF 2D BARCODES
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STACKED TYPE
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Codablock
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Code 49 PDF 417
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MATRIX TYPE
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Code 1 Datamatrix QR Code
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3di OTHAErrRa yT TYaPgE DataGlyph
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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HOW TO GENERATE 2D BARCODES
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Libraries
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• Have to be installed with software application
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• Software app. has to be developed & maintained
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Fonts
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• Have to be installed in the user PC (at least once)
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• Need a specific encoding algorithm (similar as libraries)
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PDF Forms
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• Do not install libraries
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• Do not install fonts
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• Leverage a general purpose platform (PDF)
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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HOW TO READ 2D BARCODES
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Software (needs previous scan to Image)
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AllMyPapers, IBM IFP, Pegasus,
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TeleForm (Verity), Seaport, etc.
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Starting at 1,000$
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Hardware (Laser & CCD)
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Symbol, Datalogic, Metrologic
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CCD, Laser
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Starting at 350$
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3
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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PAPER FORMS DATA CAPTURE ALTERNATIVES
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OCR, OMR, ICR (Pattern based methods)
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EXCEPTION HANDLING
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MANUAL HAND KEY (single, double, triple)
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BOTH HAVE ERRORS (& FALSE POSITIVES)
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2D BARCODES are 100% ERROR FREE
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•Less expensive to read (.90 vs .30 )
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$ $
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•No error or false positives
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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Starring PDF 417
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PDF= Portable Data File
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ISO:IEC 15438 (SYMBOL TECH.)
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The basic unit: Mr. Codeword
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(a 417 pattern)
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23134121
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1 BARCODE = 925 MAX DATA CW
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4
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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ANATOMY OF A PDF 417
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Start Left Row DATA Right R. Stop
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Pattern Indicator CODEWORDS Indicator Pattern
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(1-30 columns)
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5
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ENOZ
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TEIUQ
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GNIDAEL
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ENOZ
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TEIUQ
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GNILIART
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SYMBOL CAPACITY
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1,850 TEXT - 1,108 BYTE - 2,710 NUMBER (ECL-0)
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2 CharPerCw 1.2 CharPerCw 2.93 CharPerCw
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1,726 TEXT - 1,033 BYTE - 2,528 NUMBER (ECL-5 )
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min rec
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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ROWS AND COLUMNS
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ROW
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2 COLUMNS OVERHEAD
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10 COLUMNS
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she sells sea shells by the sea shore she
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sells sea shells by the sea shore (76)
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Number of COLUMNS is between 1-30
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Number of ROWS is between 3-90
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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ECL : Error Correction Level
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ECL 4 (118 DATA : 32 ECC)
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ECL 6 (118 DATA : 128 ECC)
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ECL 8 (118 DATA : 512 ECC)
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MANUFACTURER
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RECOMMENDATIONS (SYMBOL):
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When I find myself in times of
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trouble Mother Mary comes to Always try to maintain printing
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me speaking words of wisdom,
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let it be. And in my hour of quality.
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darkness She is standing right
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in front of me speaking words
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of wisdom, let it be. Let it Do not compensate poor
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be, let it be (230)
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printing quality with a raise of
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ECL
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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RESOLUTION & X:Y RATIO
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X
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1:1 MODULE
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RESOLUTION (X)
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2:1 measured in mils
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1 mil = 1/10,000 inch
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3:1
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4X
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3X
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2X
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4:1
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MANUFACTURER RECOMMENDATIONS (SYMBOL):
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At least minimum recommended ECL: 3x
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Less than minimum recommended ECL: 4x
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6
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Y
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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2D BARCODE PARAMETERS
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QUANTITY OF DATA
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COMPRESSED, UNCOMPRESSED
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AVAILABLE PHYSICAL SPACE
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AS MUCH AS POSSIBLE AT DESIGN TIME, REDESIGN, SEPARATE SHEET
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READING METHOD PRINTING ENV.
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HARD, SOFT, FAX CONTROLLED vs UNCONTROLLED
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NUM. COLUMNS ECL
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1-30 1-8
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RESOLUTION X:Y RATIO
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10-15 2:1 - 3:1
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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WHAT’S INSIDE A 2D BARCODE?
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ALPHANUMERIC DATA
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- Static info (owner): DOR ID, Form Version...
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- Variable info (owner): Date, Time...
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- Control Characters (TAB, CR, F keys)
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- Variable info (user): User Data...
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- Any Format (CSV,TAB,XML)
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VALUABLE FORM INFO
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- NumChars, TimeToFill, ViewerVersion, etc...
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7
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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MACRO PDF417
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Up to 99,999 symbols can be chained
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together and be read as one file
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Totalling 100+ MB
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• Macro vs Distributed 2D Barcoding
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MICRO PDF417 (aka “Truncated”)
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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MULTI PAGE BARCODING OPTIONS
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1 BC = 1 Page 1 BC = 1 Form 1 Page for all BCs.
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Needs 3 Watch print order (what do I sign?)
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captures
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DON’T ALLOW THE USER TO
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PRINT THE FORM PARTIALLY
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8
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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2D BARCODES & ENCRYPTION
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2D BARCODES ARE FOR DATA CAPTURE
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- What if we cannot read?
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Controlled vs Uncontrolled (Print env.)
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- Sign readable set
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DATA + KEY = Encrypted DATA
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Technology = Rsytbwpwyz
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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FAXES & 2D BARCODES
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• Capture from FAX
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• Symbol needs more resolution
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9
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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FIND THIS PRESENTATION AT:
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www.dataintro.com/fta/
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send questions to:
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carlosg@dataintro.com
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TO KNOW MORE ABOUT 2D BARCODES...
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WWW.ADAMS1.COM
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WWW.SYMBOL.COM
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FTA TECHNOLOGY CONFERENCE
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August 7-10 | Columbus, OH
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2D Barcodes at a Glance
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Carlos Gonzalez (Dataintro Software)
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2D BARCODES AT A GLANCE
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THANK YOU!
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10
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