Is Apple's mobile phone exposure notification useful?

Apple's mobile phone exposure forecast is useful.

In April 2020, Apple and Google, two mobile phones and system competitors, came together and joined the "exposure notification system" of iOS and Android operating systems.

"Exposure notification" can determine whether the user may have contacted the patient who claims to be infected with coronavirus pneumonia-19 by using the rotating random Bluetooth identifier without infringing privacy.

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When Apple and Google cooperated on the "Exposure Notification" API, the two companies introduced the two stages of the technology in detail. The first stage, that is, the release version of iOS 13.5 that we finally saw, requires users to download applications from their public health institutions to choose to join the "exposure notice".

The current version has entered the second stage of this technology, released as a part of iOS 13.7, allowing users to choose to join the "exposure notice" of coronavirus pneumonia-19 without installing the application. However, using this function requires the application of public health institutions to confirm the positive case of coronavirus pneumonia-19.

Phoenix Net-Apple iOS 13.7 adds COVID-19 exposure notification function without downloading.