We’re all constantly calibrating our views and re-thinking exactly where we draw the line between the security offered by surveillance and the last hints of privacy to which we cling. The discussion often boils down to law enforcement vs personal privacy. But technology doesn’t care who’s using it. And the same tools used by first responders often filter down to the general public. Bloomberg’s Robert Kolker looks at one privacy-invading tool that could be moving in next door: “Maybe it doesn’t faze you that your local police have a $400,000 device that listens in on cell phones. How will you feel when your neighbor has a $1,500 version?” What Happens When the Surveillance State Becomes an Affordable Gadget? (I’ve been preparing for this day. And my neighbors are about to get the show of a lifetime.)