Officially provided by the Ministry of Health, Labour and Welfare of Japan (MHLW), this app notifies you of close contact with COVID-19 positive users to help the government and healthcare organizations contain the spread of COVID-19.
If the code shared by a COVID-19 positive user matches with a code stored on your device, you will be notified that you have been in close contact with COVID-19 positive user and provide guidance to protect your health.
If you are tested COVID-19 positive and have anonymously registered the positive test result, the app will notify users who were within 1 meter for 15 minutes or more during the period of infectivity.
Users tested COVID-19 positive, can choose to share the random codes that their devices have sent out.
When healthcare organization registers your positive test results to “The Health Center Real-time Information-sharing System on COVID-19” (known as HER-SYS) provided by MHLW, a processing number is issued to you.