COVID-19 Contact-Confirming Application

COVID-19 Contact-Confirming Application
COCOA
COVID-19 Contact-Confirming Application; COCOA;
Original author(s)	COVID-19 Radar Japan
Developer(s)	Ministry of Health, Labour and Welfare
Initial release	June 19, 2020
Stable release	1.4.1 / November 26, 2021
Repository	github.com/cocoa-mhlw/cocoa ;
Written in	C#
Operating system	Android 6.0 or later; iOS 13.5 or later;
Available in	3 languages
	List of languages Japanese; Chinese; English;
License	app: proprietary; source: MPL 2.0;
Website	www.mhlw.go.jp/stf/seisakunitsuite/bunya/cocoa_00138.html

COVID-19 Contact-Confirming Application (COCOA) is a COVID-19 application for smartphones provided by the Ministry of Health, Labour and Welfare of Japan. The application uses Bluetooth to detect and record suspected close contacts between users. If the contact is diagnosed with COVID-19, the user will be notified. After receiving the notification, the user can consider self-isolation or go to a medical institution for treatment.