Nerval's Lobster writes Ever forgotten your wallet in a coffee shop or restaurant? Now there's a way to ensure it'll never happen again: Woolet, which its creators bill as a "smart wallet." It features a rechargeable battery, Bluetooth support, and the ability to synchronize with a smartphone app; if you walk 20-85 feet away from your wallet, the app will make a sound and guide you back to it. The platform's being financed on Kickstarter, and attracted attention from TechCrunch and some other places, but it begs the question: is this yet another example of connected devices run amok—shiny and interesting as a concept but not nearly useful enough for the population at large? What would it take for a connected device, whether a wallet or a smoke detector, to gain mass appeal?