Hi,
It is possible to spread a message across multiple barcodes, up to a maximum of 16. This gives approximately 36K of storage across 16 144x144 barcodes.
In order to implement this a marker '233' is placed in the first codeword of each barcode, followed by a byte giving 'page x of y' and 2 bytes 'file reference' (numerical value 1 through 64516).
I would suggest that a command line option be used on encode to specify the file reference to use ie '-F 1234', which implies that Structure Append is required.
When decoding it is permitable for the decoder to just dump the elements individually, say to file '1234_1_5' refering to part 1 of 5 reference 1234, and that another application (cat?) would combine them into the single file.
An example of use would be to provide machine readable pages of a book, a scheme like this would have made the export of PGP a lot easier ;-).
Error checking would have to be done to ensure that sufficent space exists within the 16 barcodes to encode all the information.
I assume that the largest size barcode would be used, unless the user specifies a particular size.
Q. Would the last barcode in the sequence be forced to match the previous ones?
Q. Is the latched mode maintained across barcode boundaries? I assume not.
Simon
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