Toyoake Mayor Masafumi Koki does not see smartphones as the enemy. He uses one himself to track baseball games and check maps for work.But after seeing children's sleep vanish and families lose time to glowing screens, he decided that the commuter city near Nagoya needed a gentle reminder: maybe two hours a day is enough.On Wednesday, Toyoake will put into effect a new ordinance urging residents to limit their personal smartphone use to two hours a day. The guideline does not apply to work or study, but ever since it was announced in late August, the "two-hour rule" has spread across social…READ FULL ARTICLE