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I have a 2d barcode scanner (Honeywell Xenon 1900).
Scanning 1D barcodes is easy, as the scanner emulates keyboard events and sends plain text.
But when I scan PDF417 format 2D barcodes, the scanner sends binary data. How can I capture and decode this data? Some of symbols are non-printable, so scanning into a form on a web page wouldn’t work.
My solution for this question is using COM-port.
I configure scanner, so it sends data not as keyboard events, but in virtual COM-port.
Then I have Java-applet, that listens this port (using RXTX). Then COM-port is not empty, I can get data and parse it.