That was the good idea (it's basically a prototype for today's QR-codes). The terrible idea was that this gadget would spy on you. Also, it would only work with special barcodes that had to be licensed from the manufacturer. Also, it would only work on Windows.
4/
But the manufacturer didn't have the last word! Not at all. A couple of enterprising hardware hackers - Pierre-Philippe Coupard and Michael Rothwell - tore down a Cuecat, dumped its ROM, and produced their own driver for it - a surveillance-free driver that worked with *any* barcode.
5/