The inspiration for the solution created by Cheil Worldwide came from Morse code and led to the development of a system that enables individuals in peril to inform the police without uttering a word.

By dialing 112 and tapping any number twice, a link is sent to them, allowing the police to monitor the situation through the caller’s camera, track their location without the need for an LBS request, and discreetly communicate with them through an app disguised as a Google search page to avoid alerting the perpetrator.

This enables the police to take swift action.

The novel emergency call system was introduced to 4,800 police call handlers throughout the country. The initiative was unveiled on the Korean government’s official blog and YouTube channel, and widely publicized through OOH media in police stations and government offices across the nation.

Following the campaign launch, a total of 5,749 links were dispatched to individuals in emergency situations, and as a result, ‘Knock Knock’ was officially recognized as an emergency call system in South Korea.

“Through the Knock Knock campaign, we hope our silent 112 police emergency call system becomes a sustainable solution in which any citizen in danger can reach out to, and any police officer can quickly respond to,” an official of the Korean National Police Agency said.