An anonymous reader quotes the AP:Colorado officials have cleared the language of a proposed ballot measure that would establish the nation's first legal limits on buying smartphones for children. Backers of the move to forbid the sale of smartphones to children younger than 13 would now need about 300,000 voter signatures for the proposal to make the 2018 ballot. The ban would require cellphone retailers to ask customers about the age of the primary user of a smartphone and submit monthly reports to the Colorado Department of Revenue on adhering to the requirement. Retailers who sell a phone for use by a youngster could be fined $500, after a warning. A Denver-area dad is leading the campaign -- a board certified anesthesiologist who says children change when they get a cellphone. "They go from being outgoing, energetic, interested in the world and happy, to reclusive. They want to spend all their time in their room. They lose interest in outside activities." Read more of this story at Slashdot. Click here to read full news..