Where are your keys? How about your cat? Personal locator devices have come a long way since the days of "whistle and your keychain bleeps," and TrackR is hoping to lead the charge with its new sub-$30 bravo dongle. Aiming to not only allow users to leave their smartphone to keep track of their belongings, rather than forcing them to memorize where they last saw everything, but to also rope in the power of crowdsourcing to replace costly GPS, TrackR bravo is a 2014 Indiegogo success that's finally shipping today. It's been dangling from my belongings for the past few weeks; read on for some first-impressions.