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PDF417 is a stacked linear barcode format used in a variety of applications such as transport, identification cards, and inventory management. "PDF" stands for Portable Data File. The "417" signifies that each pattern in the code consists of 4 bars and spaces in a pattern that is 17 units (modules) long. The PDF417 symbology was invented by Dr. Ynjiun P. Wang at Symbol Technologies in 1991. It is defined in ISO 15438.
History
Feb 28
Projective Set (game)
Feb 27
Fibonacci sequence
Feb 26
James E. Talmage
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Point process
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Projective space
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Bernoulli distribution
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Beta distribution
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Fixed-point arithmetic
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Marianne Williamson
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Finnegans Wake
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Reed–Solomon error correction
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QR code
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Hadamard matrix
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United States presidential primary
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Geoduck
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Cyclomatic complexity
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Reflection phase change
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Aztec Code
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PDF417
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List of URI schemes
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g-index
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Camera matrix
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Sparse Fourier transform
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Expected value
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Hough transform
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Coherence time (communications systems)
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Hough transform
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Joe Biden presidential campaign
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Scale-invariant feature transform
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George Soros