NeoMedia Technologies, Inc (NEOM)

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DataMatrix Or QR Code Or Aztec? Which one is right for your business?


DataMatrix Description
http://semacode.org/about/technical/whitepaper/best_2d_code.pdf

- the smallest module is 10 x 10 (more space efficient)
- limited configuration (not economical)

Aztec (Qode)
http://www.tkb-4u.com/code/barcode/aztec.php

- the smallest module is 15 x 15 (less space efficient)
- more configuration (more economical)


AZTEC Code (a high density 2 dimensional matrix style bar code ) Codes / Markings


Aztec Code is a high density 2 dimensional matrix style bar code symbology that can encode up to 3750 characters from the entire 256 byte ASCII character set. The symbol is built on a square grid with a bullseye pattern at its center. Data is encoded in a series of "layers" that circle around the bullseye pattern. Each additional layer completely surrounds the previous layer thus causing the symbol to grow in size as more data is encoded yet the symbol remains square. Aztec's primary features include: a wide range of sizes allowing both small and large messages to be encoded, orientation independent scanning and a user selectable error correction mechanism.

The smallest element in an Aztec symbol is called a "module" (i.e. a square dot). The module size and the amount of error correction are the only "dimensions" that can be specified for an Aztec symbol and both are user selectable. It is recommended that the module size should range between 15 to 30 mils in order to be readable by most of the scanners that are currently available.

The overall size of an Aztec symbol is dependent on the module size, the total amount of encoded data and also on the level of error correction capacity chosen by the user. The smallest Aztec symbol is 15 modules square and can encode up to 14 digits with 40% error correction. The largest symbol is 151 modules square and can encode 3000 characters or 3750 numeric digits with 25% error correction.




Summary AZTEC-Code:

a) Encodable character set:
1) All 8-bit values can be encoded. The default interpretation shall be
(a) for values 0 - 127, ABSI X3.4 (i.e., ASCII) and
(b) for values 128 - 255, ISO 8859-1: Latin Alphabet No. 1.
This corresponds to ECI 000003.
2) Two non-data characters can be encoded, FNC1 for
compatibility with some existing applications and ECI
escape sequence for the standardized encoding of
message interpretation information.

b) Representation of data:
A dark module is a binary one and a light module is a binary zero.

c) Symbol size:
1) The smallest Aztec Code symbol is 15x15 modules square, and the
largest is 151x 151.
2) No quiet zone is required outside the bounds of the symbol.

d) Data capacity (at recommended error correction level):
1. The smallest Aztec Code symbol encodes up to 13 numeric
or 12 alphanumeric characters or bytes of data.
2. The largest symbol encodes up to 3832 numeric or 3067
alphabetic character or 1914 bytes of data.

e) Selectable error correction:
1. User-selectable, from 5% to 95% of data region
2. Recommended level is 23% of symbol capacity plus codewords.

f) Code type:
Matrix

g) Orientation Independent
Yes



TKB-4.com (Codes / Markings)

Choose your choice for your business wisely. jmho

With best, BM