In recent years, many countries have expressed deep concern about the increase in corona19 diagnoses again. How can I stop Corona 19? Many countries are using smartphones, and Japan and Singapore are also using smartphone apps. A reporter in Singapore took a closer look at local usage.

● Installation is complete in 3 minutes!

After downloading and installing the app called TraceTogether, enter the smartphone number and 6-digit password to complete the installation. The app is made in 8 languages, including English and Chinese, so foreigners residing in Singapore can use it. All user names, etc., are encrypted and handed over to the Ministry of Health (MOH).

It is to use the Bluetooth function of the smartphone with this app installed. Bluetooth scans another device at a distance of 2 meters and records who has been in it for 30 minutes. When a user detects a Corona19 infection, he will notify close contacts stored on the server and send them a message to be tested. It's simple, but the Singaporean government is hoping for great results.


However, it is not 100% perfect. The smartphone must be turned on at all times. In addition, Bluetooth function, notification function, and location tracking function must also be turned on for normal service.

Separate hardware is provided for those who cannot use the smartphone. It is a portable tracking device smaller than the palm of your hand called'TraceTogether Token'. It has the shape of a Bluetooth earphone case that is used a lot these days. It is possible to trace the line while exchanging Bluetooth signals with a smartphone with the built-in trace together above. There is no risk of data leaks because there is no internet connection, Singapore authorities explained. It also means there is no fear of hacking.


Japan also made a smartphone app called'Cocoa' since the 19th of last month to enter the service. The principle of operation is similar to Singapore's'Trace Together'. However, both Japan and Singapore have similar problems. Even if there is close contact, it is difficult to expect the effect without using this app. Many people have to use this app to increase accuracy. However, it is difficult to expect high accuracy because the use of the app is not mandatory.

The disadvantage is that the'Cocoa' app also works properly when the smartphone is turned on. Also, as a result of asking the locals in Japan, above all, they complained that they consumed more power of the smartphone than other apps. I have no choice. This is because the app and Bluetooth must be operated 24 hours to receive normal service.

China uses slightly different IT technologies. QR code. It is also a common feature in China these days.


● "Why am I red?"

After downloading the QR code to your smartphone, enter your address, health status, place you visited in the last 14 days, and whether you have contact with a confirmed person. You will then receive a three-color QR code. Green means that you can move and go without restrictions, and yellow means you need to enter the quarantine for one week because there is a possibility of contact with corona19 confirmers. A red color means you have to stay in your home for 14 days without moving, as you have been identified as concerned about corona19 infection or contact with a confirmed person. The QR code received in this way can only be used until 12 o'clock that evening. However, there are few complaints from citizens who received red codes because there is no specific explanation for the difference between yellow, red, and green.

● QR code, mandatory in China!

To enter the restaurant, you need to check the body temperature at the entrance, register your name, and scan the QR code prepared in front of the restaurant with your smartphone. The app on your smartphone will then turn green, yellow, or red. You must have a green QR code to enter the restaurant and eat.


The New York Times reporter Mozur, who analyzed the app, said in an interview with France 24 after analyzing the app. "There are no notices in the app that the police are watching. There is only a notice called a government-made service. We don't give you detailed information on how to provide services..." He expressed deep concern about privacy.

In fact, you can't go outside of China without this QR code. When entering a store, hotel, or hospital, you must enter your name and phone number and show this green QR code. The Chinese government is boasting that the number of corona19 diagnoses has been reduced after using this QR code. However, we have not been able to raise our voices regarding the protection of personal information.

Many countries are struggling with the question of'protecting personal information' in front of Corona19.