Bop Spotter
"I installed a box high up on a pole somewhere in the Mission of San Francisco. Inside is a crappy Android phone, set to Shazam constantly, 24 hours a day, 7 days a week. It's solar powered, and the mic is pointed down at the street below."
As surveillance goes, I'm into it. I appreciate the commentary:
"Heard of Shot Spotter? Microphones are installed across cities across the United States by police to detect gunshots, purported to not be very accurate. This is that, but for music."
I don't give it much time before someone figures out where it is and tries to mess with it, though.
[Link]