As you will recall from last time, Showstoppers had five categories: Audio, Video, Digital & Interactive Entertainment, Computers, Cameras, Printers & Digital Media, Productivity Tools, Security Tools & Software, Startup Pavilion, and Wireless, Mobility, Communications & Home Automation. So for this time, here are 2 from each of those categories; as I did last time, for each, I have included a short explanation and a URL so you can find out more. Here goes.
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