As if it wasn’t easy enough to find tech savvy people in public by following their trails of tweets and cast-aside year-old Apply products, Swarmly now geolocates packs of them and delivers the information directly to iOS and Android phones. After a quiet iOS launch last September, the Android version launched today on Android to increase its effectiveness and potential user base. Swarmly doesn’t require check-ins. Instead, users enable the app to use their location data to contribute to “swarms” of people nearby, linked to specific locations where groups are likely to congregate. The app is designed to work instantly, instead of relying on historical data patterns like many check-in based applications. Swarmly could be a darling of SXSW 2013, and it will be interesting to see its guerrilla marketing implications.