South Korea's spy phones.

• Position: TECHNOLOGY - Brief article

Few teenagers want their parents monitoring their phone, but in South Korea, teens don't have a choice: A new law requires smartphone users under 18 to download an app that allows parents to supervise their mobile activity--and even their location. More than a dozen apps, including Smart Sheriff, created by the government, allow parents to check how long their kids use their phones, which websites they visit, and whether they search for words like "bully" or "run away from home." The government says the law is meant to shield young South Koreans from harmful content, but many argue it's a violation of privacy and free...