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Barcode Xpress for Android provides barcode detection for Android devices. It automatically detects barcodes in the viewfinder of your Android device, and gives you complete details about each barcode.

An example of a Data Matrix code, encoding the text: 'Wikipedia, the free encyclopedia'. A Data Matrix is a two-dimensional code consisting of black and white 'dots' or dots arranged in either a square or rectangular pattern, also known as a matrix. The information to be encoded can be text or numeric data. Usual data size is from a few bytes. Sha-256 is a function of algorithm Sha-2 (as 384, 512, and more recently 224 bits versions), which is the evolution of Sha-1, itself an evolution of Sha-0. Sha-2 algorithm was developed by NSA to answer the security problem of Sha-1, since the theorical discover of a 2^63 operations for collisions. This algorithm takes as input a 2^64 maximum. Generating & Printing Data Matrix 2D Barcode Images Online. Online Data Matrix Generator is developed based on OnBarcode Barcode Generator for.NET. OnBarcode also provides the following libraries and components for generating, printing, scanning, and reading Data Matrix barcodes. Notice the fact that you can give it any alphabet to use for encoding and decoding. If you leave the alphabet argument out, you are going to get the 62 character alphabet defined on the first line of code, and hence encoding/decoding to/from 62 base. Hope this helps.

For a list of barcodes that can be read, see Supported Barcode Types.

Barcode Results

Each barcode result contains the following parameters:

Barcode value
Barcode type
Confidence
Location
Skew

Supported Barcode Types

Currently, Barcode Xpress for Android supports the following Barcode Types:
2D Types1D Types

Aztec Barcode is a 2D barcode which can encode 8 bit data, including all ASCII characters (binary values 0 - 127) and the remaining values (binary values 128 - 255). The barcode also includes error detection and correction to compensate for damaged barcodes. Error correction typically takes up 23% of the code space.

The Aztec barcode has three different code sizes:

Full - Full code size.
Compact - Compact code size.
Rune - A special barcode which can only encode values 000 - 255.

Full	Compact	Rune
Number of Symbols	40	4	256
Size	19x19 - 151x151 modules	15x15 - 27x27 modules	11x11 modules
Text Capacity (characters)	15 - 3067	12 - 89	0
Numeric Capacity (Digits)	18 - 3832	13 - 110	3
Binary Capacity (8 Bit values)	8 - 1914	6 - 53	0

Below is an example of the Australian 4-State Postal Code.

The Australian Post 4 State barcode is a 4-state barcode. It supports four different formats:

Standard
Customer Barcode 2
Customer Barcode 3
Reply Paid Barcode

The Customer Barcodes 2 & 3 include a customer field for encoding data. This barcode also supports the Reed-Solomon error correction scheme.

Format Control Field

The Format Control Field is a 2 digit field identifying the barcode type:

11 - Standard Customer Barcode
59 - Customer Barcode 2
62 - Customer Barcode 3
45 - Reply Paid Barcode

Sorting Code

The Sorting Code is an 8 character sorting code (Delivery Point ID)

Customer Information

There is a free format area available in the Customer Barcodes 2 & 3. This will be decoded using the AustrailianPostCustomDecodeType.

If the decode mode is 'BarStates', then the output will be either bar state 'F' full bar, 'T' tracker bar, 'A' ascending bar, or 'D' descending bar.
If the decode mode is 'TableN', then the output will be decoded using the numeric decoding defined in the Australian Post specification.
If the decode mode is 'TableC', then the output will be decoded using the character decoding defined in the Australian Post specification.
If the decode mode is 'NoCustomDecode', then the bars in the custom section are not decoded.
Use the no custom decode if the decode mode has no custom decode type.

Note: If the FCC code is not valid, the confidence will be decreased by 10%.

Add 2 and Add 5 Barcode Specifications Retail barcodes (UPC and EAN) are strictly limited in the amount and format of the data that they encode. Add 2 or Add 5 barcodes give the vendors another two or five digits to identify the specific product, model, or issue. It is usually printed just to the right of the product code. For periodicals, an Add2 often indicates the issue, while other publications include a volume number.

Below is an Add 2 barcode example:

Below is an Add 5 barcode example:

This is a numeric only code used by the Airline industry, and is a variation of Industry 2 of 5. This barcode is also known as Airline 2 of 5.

BCD Matrix is a compact version of 2 of 5 barcodes, but its checking for the data patterns is not as robust. It does include a checksum character. It is not widely used.

Code 128 provides excellent density for all-numeric data and good density for alphanumeric data. The symbol can be as long as necessary to store the encoded data. It is often selected over Code 39 in new applications because of its density and because it offers a much larger selection of characters. Code 128 is designed to encode all 128 ASCII characters.

A Code 128 can actually be divided into three subsets A, B, and C. There are three separate start codes to indicate which subset is being used. In addition, each subset includes control characters to switch to another subset in the middle of a barcode.

A - Digits, uppercase characters, standard ASCII symbols, and control codes.
B - Digits, upper and lower case characters, standard ASCII symbols, and control codes.
C - Numeric only. Compresses two numeric digits into each character, providing excellent density. Barcode Xpress Mobile will add a leading '0' if there are an odd number of digits in the code.

Each character is 11 times the width of the most narrow bar.

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