Wonder when this will become an app on your smart-phone?

His name is Hong Gwang Ui, a 43 year-old father of a four year old son, and using his knowledge as an engineer for the military he crafted a simple device which sets off an alarm if within 30 meters of a convicted sex offender.

Mr. Hong said he invented the machine because “as a father of a four year-old son, every time I hear a news story about a heinous sexual crime the anger swells up inside. After thinking over ways to help prevent these crimes, I developed this device.”

[...]

The ankle bracelets emit a signal on a specific frequency to the control center every 6 seconds providing the authorities with the person’s location. Mr. Hong’s EABD simply beeps when this signal is detected within 30m.

He received the go-ahead from the Ministry of Justice to start selling these devices online from next month. To avoid further human rights issues, Mr. Hong only plans to sell to fixed locations like schools and playgrounds.

You can read the rest of the article here – at Rocket News.