Japan rolls out Microsoft-developed COVID-19 contact tracing app

Japan’s government today released its coronavirus contact tracing app for iOS and Android. The apps rely on Apple and Google’s co-developed exposure notification platform, using Bluetooth to help determine whether users have come into close contact with others who have tested positive for COVID-19.
Though the app store listing simply reads “COVID-19 Contact App,” Japan refers to the app as COCOA, a somewhat convoluted backronym that stands for COVID-19 Contact-Confirming Application. It was developed by Microsoft engineers, according to Nikkei, who were hired in May after Google and Apple’s conditions reportedly led the government to abandon the work done by a Tokyo-based team in favor of a bigger corporation.

COCOA doesn’t store personal information like location data or phone numbers, the government says, in accordance with Apple and Google’s tracking platform. Instead, it records encrypted data flagging phones that have been within one meter for more than 15 minutes; when one person reports the fact that they have tested positive for COVID-19, those other users will be notified.
Several countries have debated their approach to contact tracing apps in recent months, with some governments seeking more control over data than Apple and Google’s APIs allow. Germany released its own app based on the same platform after originally planning to develop a different system, and the UK similarly backtracked this week on a proprietary NHS app that has been in testing.
Japan’s coronavirus outbreak has been relatively small considering the country’s size, with 17,668 cases and 935 deaths confirmed so far. That represents a figure of 140 cases per million people, compared to 6,779 in the US and 1,060 worldwide. Today, the government lifted its advice to avoid travel between Tokyo and its surrounding prefectures, and the delayed Nippon Professional Baseball season will begin in empty stadiums this evening.
Japan’s government today released its coronavirus contact tracing app for iOS and Android. The apps rely on Apple and Google’s co-developed exposure notification platform, using Bluetooth to help determine whether users have come into close contact with others who have tested positive for COVID-19. Though the app store listing simply…
Recent Posts
- DOGE can keep accessing government data for now, judge rules
- In a test, 2000 people were shown deepfake content, and only two of them managed to get a perfect score
- Quordle hints and answers for Wednesday, February 19 (game #1122)
- Facebook is about to mass delete a lot of old live streams
- An obscure French startup just launched the cheapest true 5K monitor in the world right now and I can’t wait to test it
Archives
- February 2025
- January 2025
- December 2024
- November 2024
- October 2024
- September 2024
- August 2024
- July 2024
- June 2024
- May 2024
- April 2024
- March 2024
- February 2024
- January 2024
- December 2023
- November 2023
- October 2023
- September 2023
- August 2023
- July 2023
- June 2023
- May 2023
- April 2023
- March 2023
- February 2023
- January 2023
- December 2022
- November 2022
- October 2022
- September 2022
- August 2022
- July 2022
- June 2022
- May 2022
- April 2022
- March 2022
- February 2022
- January 2022
- December 2021
- November 2021
- October 2021
- September 2021
- August 2021
- July 2021
- June 2021
- May 2021
- April 2021
- March 2021
- February 2021
- January 2021
- December 2020
- November 2020
- October 2020
- September 2020
- August 2020
- July 2020
- June 2020
- May 2020
- April 2020
- March 2020
- February 2020
- January 2020
- December 2019
- November 2019
- September 2018
- October 2017
- December 2011
- August 2010