The smoking-free area monitoring application (KTR) is a software-based compliance recording and enforcement tool for mobile phones. This tool can be used by anyone throughout Indonesia. Account activation is carried out by the party responsible for implementing KTR in each Regency/City (Health Office). The development of this tool was carried out by the Ministry of Health, Ministry of Home Affairs and partners with facilitation from the World Health Organization (WHO) in Indonesia. All available data is confidential and managed according to regulations and regulations in force in Indonesia. For further information, please contact the PTM Directorate of the Ministry of Health or through the WhatApps support center (+62851-588-10-185)