Juicy Development's released what it is calling the first interactive police scanner for the iPhone and iPod Touch. The app, called Police Scanner 2 ($4.99, available here), allows users to alert others about emergency broadcast streams as they happen using text messages. The text messages appear on a small ticker in the app, letting users tune in to the stream being discussed. With over 2300 national and international EMS streams, Police Scanner offers the largest selection of police, fire, and emergency services streams available for the iPhone in one application, according to the developer.