> Another program, made by Bright Planet and called BlueJay, is billed in a brochure to law enforcement as a "Twitter crime scanner." BlueJay allows cops to covertly monitor accounts and hashtags; three that Bright Planet touts in promotional material are #gunfire, #meth, and #protest. In another promotional document, the company says BlueJay can "monitor large public events, social unrest, gang communications, and criminally predicated individuals," as well as "track department mentions." Bright Planet did not respond to a request for comment.

The firehose, which BlueJay presumably collects from, doesn't capture geolocations that aren't already in the public data, right? So it looks like the end of the road for criminals who tweet about their #meth lab and have let Twitter geocode their tweets. Hopefully, that consists of the majority of villains the police have to deal with