It’s said that the walls have ears. Now, so does a pole in the Mission. Last Saturday, Riley Walz installed a box with a “crappy Android phone” and a microphone up on a pole at an undisclosed location ...

Bored of your Spotify algorithm? There’s now an ever-growing playlist that relies on a more tangible source: San Francisco’s Mission District. The Bop Spotter project uses a microphone to ...

Bop Spotter isn't much to look at: it's a plastic box attached near the top of a light pole located in the heart of the Mission District — one of San Francisco's most densely populated and diverse ...