Actually there is a world of difference between producing a 1-off and mass production of an electronic device. Having attended trade shows for several decades, take any device shown at one with a large grain of salt, especially when the company doing the showing is talking about "coming soon" or "almost ready for production." Even if they give you a firm shipping date, don't hold your breath. I can't tell you how many thousands of devices, systems, and software products I have seen over the years that never made it off the trade show floor.
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