Just about every peripheral company has come up with a handheld WiFi detector over the past year, but none of them have excited us enough to earn a place on our keyring. However, we do like the direction being taken by the developer of the WiFi Ring, which, as its name suggests, sits neatly on your finger and lights up when it detects a network. A working prototype has apparently already been developed, and there are mockups of a finished product that looks a lot less goofy than plenty of other wearable tech (are you listening, Suunto?). If you’re a dedicated wardriver you’ll probably want something that gives you a little more data. But if you’re looking for something to help you check out the signal strength before choosing a seat at Starbucks, one of these could come in handy.