The app has additional capabilities such as decoding HRI in GS1 symbols and reporting the symbol size. When downloaded to a mobile device, it easily reads from the screen or printed material. The most common method of reading Data Matrix barcodes is with a camera-based image reader aka: barcode imager.
A common implementation is to use the camera in a mobile device. On desktop computers, most of the hand-held barcode imagers perform keyboard emulation and receive power from the USB port so that no external power supply is needed.
When a barcode symbol is read using keyboard emulation, the data appears at the cursor as if it had been typed in from the keyboard. In many cases, it may be desired to have the scanner trigger a form or action in an application. It is recommended to limit the amount of data encoded in each symbol to characters or less if possible. The amount of data that can be encoded will vary depending upon the type of data, the encoding mode and what the scanner can read. In most implementations, the amount of data that can be encoded is significantly decreased due to mode switching between different types of characters, such as between numbers, upper case, lower case and punctuation.
Most camera based imagers and hand-held scanners have a difficult time reading symbols that contain over characters. By default, the encoding mode for most components is BASE If the choice is to encode text or numbers only and size is a concern, a change of the encoding mode to ASCII may produce a smaller symbol. Most encoding systems can be used to encode any data; however, encoding binary data with C40 will generate much more overhead a larger symbol than with BASE The following tilde options are available:.
The following table contains the size, capacity and error correction features of each format. The encoding mode may be changed to reduce the symbol size in some situations. The chart below illustrates the symbol size, in the best-case scenario, for the amount of data encoded. The amount of data that can actually be encoded is usually less than what is stated here because of shift and error correction characters that are required for data within the symbol.
Maximum numeric capacity is achieved with numbers only in ASCII mode and maximum alphanumeric capacity is achieved with only numbers, spaces and uppercase letters in C40 mode. This update will be included in the Data Matrix release updates, including the Data Matrix Font and Encoder and other components. This standard contributes to the following Sustainable Development Goal :. CHF Buy.
Life cycle Previously Withdrawn. Final text received or FDIS registered for formal approval. Proof sent to secretariat or FDIS ballot initiated: 8 weeks. Close of voting. Proof returned by secretariat. International Standard under systematic review. Under development. Got a question? Customer care.
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