A. 変わりません。現在の現場ID（QRコード）が維持されたまま、サーバー側の登録データのみが上書き更新されます。そのため、掲示済みのQRコードを貼り替える必要はありません。
Q. 復元ボタンを押すと「該当する現場データが見つかりません」とエラーが出ます
A. 入力した現場IDが間違っている（スペースが含まれているなど）か、あるいは入力した現場IDに対してまだ一度も 登録する ボタンが押されておらず、サーバー側にマスタが作成されていない可能性があります。IDに間違いがないか確認し、初回は必ず「登録する」を実行してください。
Q. 作業員が「退坑」を押し忘れて帰宅してしまい、現在入坑中リストに残り続けています
A. 現在入坑中を確認する ボタンでリストを表示し、該当作業員の行にある「退坑させる」ボタンを押すことで、管理者が手動で退坑記録をつけることができます。次回該当の作業員が「入坑」または「退坑」を打刻したタイミングでも最新の状態に自動更新されます。
Q. 現場IDを紛失し、メモ等にも控えていませんでした。元に戻せますか？
A. ブラウザのキャッシュ（LocalStorage）が残っていれば画面上部に表示されますが、端末故障やブラウザ履歴の削除等で完全に紛失した場合は、セキュリティの仕様上、古いIDを外部から特定して復元することはできません。その場合は、諦めて 新しい現場を作成する（現場IDリセット） を行い、新しい現場IDでQRコードを再発行し、掲示し直してください。
Q. CSVファイルが文字化けする
A. 本システムが出力するCSVには、Excelでの文字化けを防ぐためのBOM（Byte Order Mark）コードを自動で付与しています。それでも文字化けする場合は、Excelの「データ」タブから「テキストまたはCSVから」を選択し、文字コード「UTF-8」を指定して取り込んでください。
Q. 同じパソコンで複数の現場（別の現場ID）を同時に管理できますか？
A. はい、可能です。ChromeやEdgeなどのブラウザで「別のアカウント（プロファイル）」を作成してアプリファイルを開くことで、データ保存領域（LocalStorage）が完全に独立します。これにより、同じパソコンであっても別々の現場IDでアプリを同時に使用・管理できます。
👨💼 For Site Managers: Initial Setup & Operation Steps
Managers perform the following initial configuration using setup.html when a new site is established.
Step 1: Enter Site Information
1. Site Name (現場名)
Enter the exact name of the construction project in the "現場名" field.
2. Prime Contractor (元請会社名)
Enter the name of the prime contractor company in the "元請会社名" field.
3. Register First-tier Subcontractors (一次下請け会社名)
Enter the first subcontractor's name in the initial field. If there are more companies, click the ＋ 下請け会社を追加 button to increase the input fields. Enter all first-tier subcontractors entering the site.
* "Prime Staff", "Inspector", and "Guest" are automatically added by the system, so there is no need to enter them here.
Step 2: Master Registration & QR Code Generation
Once all inputs are complete, click the 登録する button.
What happens after clicking:
An alert saying "マスタを登録しました。" (Master registered.) will appear.
A dedicated QR code for workers to access the entry screen will be generated at the bottom of the screen.
The entered Site Name and Prime Contractor name are auto-saved in the browser (LocalStorage) and retained for the next launch.
Preparation for Posting:
Print the generated QR code and post it at the "Entry/Exit Gate" where workers can scan it safely.
[Important] Once the QR code is generated, it will not change even if you add or register more first-tier subcontractor names. There is no need to replace the posted QR code.
Step 3: Site ID Management & Recovery (Important)
A unique "Site ID" is issued for each site and displayed at the top of the screen.
■ Saving the Site ID
Please note down this Site ID in a memo or email. This is necessary in case of device failure or if you need to operate/edit the management screen (setup.html) on another PC or tablet.
■ Editing on Another Device (Recovery)
When opening setup.html on a new device, enter the noted Site ID in the recovery field and press the 復元 (Restore) button to take over the management of that site.
* If you open the app file using a different account (profile) in browsers like Chrome or Edge, the storage area becomes independent, allowing you to use and manage the app with a different Site ID on the same computer.
Step 4: Operations During Construction (Verification & Data Output)
■ Check Currently Active Workers & Manual Exit
Click the 現在入坑中を確認する button to display a real-time list of workers who have recorded "Entry" but not "Exit". If a worker forgets to record their exit, the manager can manually process their exit by clicking the "退坑させる" (Force Exit) button on the right side of the list.
■ Download Recorded Data
Specify the period (Start Date - End Date) and click the 記録をCSVでダウンロード button to fetch logs for the specified period. It downloads as a CSV file which can be opened directly in Excel. *If no dates are specified, the logs for the past month will be downloaded.
Step 5: Reset Processing for Site Closure or Troubleshooting
The reset button at the very bottom of the screen involves resetting data within your device. Ensure you understand its function before use.
新しい現場を作成する（現場IDリセット）
Purpose: Detach the current site settings from this device (browser) to prepare for creating a new site.
What is deleted: Only the local storage on the device (current Site ID and input data).
Result: A new Site ID is generated, and the input fields are emptied. *Data on the server (Master and Logs) is NOT deleted. As long as you have the previous Site ID, you can always return to managing the old site using the "Restore" function.
💡 For Workers: Daily Steps
Step 1: Scan QR Code
Scan using the smartphone's standard "Camera app" (e.g., standard Camera on iPhone, standard Camera or Google Lens on Android).
[Important] Once the screen opens, if you are using an iPhone, tap the compass icon at the bottom right to reopen the page in the default Safari browser (this makes adding it to the home screen smoother).
* Avoid using in-app browsers like LINE, as they restrict camera access and prevent facial recognition.
Step 2: Facial Recognition Entry (Recommended)
This system supports facial recognition, allowing you to record your entry and exit quickly using the camera footage at the top of the screen.
1. First Time: Register Face Data
Enter your details in the registration area at the bottom of the screen, face the camera, and press the "Register face data to server" button.
2. Daily Entry/Exit
Once registered, face the camera and press 顔認証で【入坑】する (Enter via Face) or 顔認証で【退坑】する (Exit via Face).
⚠️ Important: Internet Connection
This system requires an internet connection. If you are in an offline area, your entry/exit will NOT be recorded. Please ensure you have a connection and wait for the confirmation alert.
Step 3: Check Currently Active Workers
Tap the 現在の入坑者を確認する button in the middle of the screen to open the read-only page. You can check the real-time list of active workers inside the site, which helps in safety management and monitoring personnel.
📱 Adding to Home Screen (Shortcut vs Iconify)
⚠️ Note: "Iconifying" locks the app to a single site
You can "Iconify" (install as an app) on your smartphone, but doing so will lock the app strictly to the site where it was created. To avoid this, please use one of the following methods.
Method 1: Set a "Shortcut"
By adding a "Shortcut" to your home screen, you can create as many shortcuts for different sites as you need.
Method 2: Iconify and Recreate when changing sites
If you prefer to "Iconify", when you move to a different site, you must delete the previous site's icon first.
Then, scan the new site's QR code and iconify it again to create the new site's icon.
[iPhone (Safari)]
Tap the "Share" button at the bottom of the screen.
Select "Add to Home Screen".
Change the name to a recognizable site name, then tap "Add".
*On iPhone, this may automatically Iconify the app. If you move to a new site, please use Method 2 (Delete and Recreate) to be safe.
[Android (Chrome)]
Tap the "Menu" button (three dots) at the top right.
For Method 1, select "Add to Home screen" (Shortcut).
For Method 2, select "Install app" (Iconify).
Change the name to a recognizable site name, then tap "Add".
❓ Troubleshooting for Managers (FAQ)
Q. Face recognition fails (Unregistered Face Error).
A. This happens if the environment (lighting, shadows, masks) differs significantly from when you registered, or if your face is too close/far. Try again in good lighting. If it persists, re-register your face data.
Q. I misspelled a subcontractor name, or want to add/change companies.
A. Enter the correct or updated information on the setup screen and click the 登録する button again. The master data will be overwritten and updated while maintaining the existing Site ID.
Q. If I modify the Site Name or Prime Contractor, or add new subcontractors, will the Site ID or QR code change?
A. No, they will not change. The current Site ID (QR code) is maintained, and only the registered data on the server side is overwritten. Therefore, there is no need to replace the posted QR code.
Q. When I click the restore button, I get an error saying "該当する現場データが見つかりません" (No matching site data found).
A. The entered Site ID might be incorrect (e.g., contains spaces), or the 登録する button has never been pressed for this Site ID, meaning no master data exists on the server. Please verify the ID and ensure registration is completed at least once initially.
Q. A worker forgot to press "Exit" before going home, and remains on the active list.
A. The manager can manually process the exit by displaying the list with the 現在入坑中を確認する button and clicking the "退坑させる" (Force Exit) button for that worker. The list will also automatically adjust to the correct state the next time the worker records an "Entry" or "Exit".
Q. I lost the Site ID and did not write it down. Can it be recovered?
A. If the browser cache (LocalStorage) is still intact, it will appear at the top of the screen. However, if it is completely lost due to device failure or clearing browser history, the old ID cannot be retrieved from the outside due to security specifications. In this case, use 新しい現場を作成する（現場IDリセット） to generate a new ID, reissue the QR code, and repost it.
Q. Can I manage multiple sites (use different Site IDs) on the same computer?
A. Yes. If you create and switch to a different account (profile) in a browser like Chrome or Edge and open the app file, the storage area (LocalStorage) becomes completely independent. This allows you to use and manage the app with a different Site ID on the same device simultaneously.
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