South Korea police wants GPS on all phones

The police force currently does not have access to phone GPS. Only 20 percent of the nation's mobile phones are GPS-enabled, making it difficult for the police to track down victims of abduction cases.

Critics of the plan, however, say it will face issues such as cost, which will be shouldered by consumers, and invasion of privacy.

Meanwhile, RFID devices that can be attached to bags or clothing and give out personal information via high frequency to sensors, are being marketed as an additional safety tool for parents of children who are out without supervision. The location and image taken by a camera device inside the tag keep track of the child, communicating directly with the parent's cellphone.