ailabstw/social-distancing

A simple, decentralized. privacy-reserving contact tracing system

The Taiwan Social Distancing Application and Its Contact Tracing Algorithm

Source of apps

Please find source of Taiwan Social Distanc, available in MIT license in the following repo,

• iOS: https://github.com/ailabstw/social-distancing-ios
• Android: https://github.com/ailabstw/social-distancing-android

Contact Tracing Algorithm

This document describes the original contact tracing algorithm (2020) used by the social distancing application form Taiwan AI Labs.

For more info, check the full whitepaper.

Build

The following dependencies are required to build the PDF.

• Pandoc

To build to file, run the following commands:

$ make

The PDF will be generated at build/whitepaper.pdf

social-distancing's Issues

Language Localization

Any plans for language localization?

We have native English, Vietnamese, Indonesian, Thai, Spanish, Korean, Japanese and German speakers in our university and can contribute.

「臺灣社交距離」 APP iOS 版本希望調整系統要求

看起來 12.5 就可以支援
https://www.forbes.com/sites/davidphelan/2020/12/16/ios-125-released-iphone-6-finally-does-covid-19-exposure-notifications/

但是目前系統安裝要求 13.7 ，希望可以調整安裝要求

「臺灣社交距離」 APP原始碼是否會釋出？

新聞看起來是你們開發，只是目前並未看到相關原始碼

Android Play
https://play.google.com/store/apps/details?id=tw.gov.cdc.exposurenotifications

iOS App Store
https://apps.apple.com/tw/app/id1554431836

確診者更新頻率？

從上週五以來手機上的key count都沒有變過，請問是因為還沒有確診者上傳隨機ID嗎？

建議 - 確診者貼上完整簡訊，由系統自動辨識起訖日期與驗證碼

確診者上傳資料

現行方式

使用者收取簡訊 → 填入日期 → 填入驗證碼 → 送出

建議補充方式

使用者收取簡訊 → 複製簡訊 → 貼上簡訊 → 送出

與現行方式相比，建議的方式減少了使用者選擇日期及填入數字操作。
雖然增加複製簡訊的步驟，但與現行方式比較更不易出錯。

其他可以考慮的方法

1. 主動讀取剪貼簿
   在 Android 12 上，每次讀取剪貼簿都會顯示通知，看起來會很煩。

2. 主動讀取簡訊
   需要使用者授予簡訊權限，可能造成一定隱私疑慮。可以在使用者同意的前提下進行。同時 iOS 似乎不支援。

Cannot init app on iOS (not test under Android)

Description

App won't enable properly.
Same situation on both iPhone 6s and iPhone 12 mini with iOS 14.6 (the latest one)
Logs screen showed up the wrong init date.

Reproduce Step

1. Install the app via App Store
2. Launch the app
3. Read the introduction of the app
4. Blank screen will shows up

Screenshots:

請調整接觸 2 分鐘的設定, 符合國際定義與實作, 不要重蹈自然人憑證覆轍

根據美國 CDC 定義 , Close Concat 是 15 分鐘，

各國 contact tracing app 大多也設定為 15 分鐘, 德國分成三個等級

太過嚴格的標準容易引起恐慌而且增加疫調人員負擔, 潛在的醫療篩檢負擔, 與隔離場所負擔

各國開源 contact tracing app : http://jgbarah.github.io/Notes/foss-covid-tools.html

加拿大 COVID Alert : 15 分鐘
https://www.canada.ca/en/public-health/services/diseases/coronavirus-disease-covid-19/covid-alert.html

英國 NHS COVID-19 App : 15 分鐘
https://faq.covid19.nhs.uk/article/KA-01130/en-us

德國 CoronaWarnApp : 三個等級
Sum of contact time <5 minutes: No risk exposure(s) (green).
Sum of contact time >=5 minutes and <9 minutes: Low risk exposure(s) (green).
Sum of contact time >=9 minutes: High risk exposure(s) (red).
https://www.coronawarn.app/en/faq/#encounter_19_calc

[QUESTION] Provide Install Numbers?

Is there a place to see install numbers for the Apple and Google platforms? Are you willing to provide these numbers? A check on the Google Play Store install number seems to only show 8800+ installs (which seems low).