San Francisco’s Mission District is now under 24/7 musical surveillance SFGATEA hidden microphone on a San Francisco street pole is spotting ‘bops’ in the wild TechCrunch‘Bop Spotter’ Is a Secret Phone Eavesdropping on the Mission’s Music Tastes KQEDWhat are people listening to in The Mission? The VergeA hidden device is sharing the Mission District’s musical soundtrack with the world San Francisco Chronicle