I think this is so cool!
"Aside from making the city more competitive in the digital era, city officials also plan to put effort into helping more vulnerable citizens. Children or elderly people with dementia will be provided smart wristbands that will transmit their location to smartphones of their family and guardians.
Should the wearer venture outside a preset zone, an alert will sound. Those from low-income households will be able to receive the devices at no cost."
News extracted from english.chosun.com