TORONTO - It's a parent's worst nightmare. Their child doesn't come home one evening and is missing for several days.

When the mother of a 14-year-old boy from Atlanta, Georgia disappeared earlier this year, she turned to her smartphone for clues using an app called Family Tracker that helped track his location.

It is one of several apps that allow parents to track the whereabouts of their children.

"You can see where your loved ones are without having to call or bother them," said Roberto Franceschetti of LogSat, the creators of the Family Tracker, which has more than 100,000 users and is available worldwide.

Parents can track the location of their child on a map, send messages, and even activate an alarm on the phone remotely.

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