Jeff Brantingham, creator of PredPol, demonstrates computer-generated "predictive policing" zones at the Los Angeles Police Department Unified Command Post in Los Angeles last year. Damian Dovarganes/AP hide caption

itoggle caption Damian Dovarganes/AP

Take a tour of the Hanford site, a nuclear production complex in Richland, Wash., and you'll see the hundreds of mechanical water pressure gauges wired to the process tubes inside the core. Tour guide Paul Vinther warns that bumping these gauges could throw off the readings enough to trigger a an emergency shutdown of the reactor. Martin Kaste/NPR hide caption

itoggle caption Martin Kaste/NPR

Pete Ashdown is founder and CEO of XMission, Utah's oldest Internet service provider. Flickr via Center for Study of Ethics at UVU hide caption

itoggle caption Flickr via Center for Study of Ethics at UVU

People wait to attend a Mozilla press conference in Barcelona, Spain, in February. Mozilla's Firefox and other Web browsers allow users to opt out of third-party tracking cookies. Josep Lago/AFP/Getty Images hide caption

itoggle caption Josep Lago/AFP/Getty Images

Tech workers looking for jobs may think twice before looking at job ads that are targeted at Americans but actually are intended for foreigners. iStockphoto.com hide caption

itoggle caption iStockphoto.com