Extension of encrypting capacities of PDF 417 bar codes, in which data is distributed by packets of 1 Ko whatever is the initial volume

摘要

Compressed data is distributed by packets of 1 Ko whatever is the initial volume. The data acquisition system and the application on receipt of data are integrated with the data system to which the bar code reader is connected. Method for extending the encrypting capacity of data by means of PDF 417 bar codes including a first stage of data compression. The data is read by a acquisition unit linked to a data system/ The data is distributed, using a particular algorithm, into a series of dynamically linked symbols to produce a second compression. An integrity control element is introduced for the data and the data system controls directly the formatting and reading of data.