The French government launched a smartphone to alert Euro 2016 fans of a terrorist attack and how to stay safe.

Senator Charles Schumer said that billboard companies that track people's movements through smartphone apps in order to optimize advertising locations pose a threat to privacy.

Uber has been fined $20,000 by the New York Attorney General's office and instructed to improve security.

The youngest households are abandoning landlines in droves. About two-thirds of households led by people ages 15 to 29 relied only on cellphones in 2011, compared with 28 percent for the broader population.

Data-collection sensors affixed to the lamp posts will measure air quality, light intensity, sound volume, heat, precipitation and wind. The sensors will also count people by measuring wireless signals from mobile devices.