AI 产品解读Browser 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.)
- 目标用户
- 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
付费分析未识别到付费功能
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.
- 置信度
- 95
- 支付平台
- --
- 来源
- AI / 高
- 需要登录
- 是
- 登录理由
- 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.
E-Taxって、何度やっても堂々巡りで、ちっとも前へ進まない。今年も紙にするか否か、検討中。
毎年堂々巡りで結局使えないことの繰り返し。国税庁に文句言っても直らない。
クッソシステム以外の何ものでもない。全然進まずに堂々巡り。大変不親切なシステム。 なかなか確定申告作成画面に進まない。どういうアホなエンジニアがコレ作ってんの???
まったく無駄、イライラして結局は繋がらない時間の無駄でした
0点、chromeでインストールしたけど全く使えない。税金の無駄遣い。マイナーカードも、毎回スマホに読み取らせないといけなくて、不便極まりない。役人たちも使わないのは納得できる。
思わぬエラーが出ました. 何回も同じエラーばかりだすな 地とも咲江進まない 去年までの方がログインの後スムーズにいったのにーーーー ログインをスマホからしても申告書の作成に行かない 最低だ!!!
差パリ
こんなもん使えるか
まじで使えない。これが絡むと不具合探しから始まる。本当、はらわたが煮えくり返る。
しっかり認識できるようにしてほしい。 もっと優秀な人に作ってもらいなさい。