AI product readBrowser bridge/launcher enabling My Number Card (マイナンバーカード) digital authentication on Japanese government online services via native messaging to a local card reader application
Japanese residents need a way to use their physical My Number Cards for digital authentication on various government web portals (e-tax, local government services, etc.) through Chrome. The extension acts as a communication bridge between government web pages and the native My Number Card reader application.
User visits a government service website → the website detects the extension via a hidden input element → the website dispatches a 'launchApp' custom event → the content script forwards this to the background service worker → the service worker connects to the native 'jp.go.cao.mpa' messaging host → the native app communicates with the physical card reader to read the My Number Card and request PIN → authentication result is returned through the chain back to the government website.
Injects extension detection signals into government web pages so they can confirm the bridge is installedRelays authentication requests from government websites to the native My Number Card reader app (jp.go.cao.mpa) via Chrome native messagingReturns authentication results from the native app back to the government web pageHandles cleanup/disconnection when pages are unloadedSupports 24+ government and related service domains (*.go.jp, e-taxrenkei.jp, local government portals, etc.)
- Target users
- Japanese residents who need to authenticate with online government services using their My Number Card / Users filing taxes, applying for certificates, or accessing local government online portals in Japan
- Extension is very small (4 text files, ~8KB of source), making analysis straightforward
- The native host application (jp.go.cao.mpa) source is not included and is distributed separately via a dedicated installer, so its internals cannot be verified
- No popup UI exists — the extension operates entirely as a content script + background service worker bridge
MonetizationNo paid features detected
No evidence of any paid features, payment platforms, subscriptions, or premium tiers in the extension code. This is a government-provided (内閣府 / Cabinet Office) free tool for enabling My Number Card authentication on government services. The 'pro' keyword hit is only in verified_contents.json metadata and is unrelated to payment.
- Confidence
- 95
- Payment platform
- --
- Source
- AI / High
- Login required
- Yes
- Reason
- The extension is a bridge that enables My Number Card (マイナンバーカード) authentication on Japanese government online services. The extension itself has no login UI, but its core workflow requires the user to authenticate via a physical My Number Card + PIN on destination government services (e.g., *.go.jp tax portals, local government sites). The native host app 'jp.go.cao.mpa' handles the card reader interaction, and the government websites require My Number Card-based identity verification to complete any workflow.
ゴミ以下、ICカードリーダーが手元にある国民は世の中の何%いると想定しているのか スマホでQRを撮ったらアプリが非対応でインストール不可と言われて終了、この終わっている底辺ド無能サービスでどう保険証普及させる気なんだ
ICカードリーダーはアナログなんですよ 一体どこに委託して中抜き何社かませていくら予算掛けて作ったのですかね?凄まじいバグ具合使いにくさアンドロイドに至ってはアプリのインストールすら出来ない端末が多発 少しでも端末でトラブルを抱えた場合このアプリと格闘してる間に役所行った方が早い
ICカードリーダライタがある環境の方が珍しいと思うのですが、何を考えてこれ作ったんですかね…これじゃエラー多発しますよ
更新が必要ですのメッセージが最初に出たので更新した Edgeを使用しているのにChromeの指示が出る カードは読めない 訳が分からん 不親切にも程がある
Worked, used with the mynumber card for Furusato Nozei application. At first I thought it wasn't working as I was inserting the card with the IC chip faced down... but for the reader I was using the IC chip had to face up... not down... So if you're having a similar issue it could be that so give it a try.
使い方が解らない?Edgeを標準使用している。Googleアカウントが4つあるんだ。わけがわからん? 評価点数:-100点
スマホがQRコード読み取れないので pcでicカードリーダを使用しログインしようとしたが ログインできない。
最低のアプリです!先ずインストールが完了しません!インストール説明が複雑で理解できにくくどうにもなりません! 利用できる状態にたどり着きません! 使う事も出来ず時間ばかりたつので、アンインストールします! 使いません!
ゴミです
解りにくく、使う人の立場で考えることのできないデジタル庁が作ったものに付き合わされるのは勘弁してほしい。