Each week Ross Rubin contributes Switched On, a column about consumer technology. The end of last week's Switched On left doubt for the future of dedicated devices that tread on the turf of smartphones. After all, funding is key to every major new product initiative and, despite the vast fortunes of many Silicon Valley engineers that have been accumulated via IPOs and acquisitions, few wish to take on the risk of fronting a new consumer device themselves.(In 2007, the handheld FlipStart PC was hatched from FlipStart Labs, funded by Vulcan Ventures, the