# Third-Party Notices

This tool uses third-party software, map data, public datasets, and official facility information.

## Leaflet

The map UI uses Leaflet 1.9.4, vendored under `vendor/leaflet/`.

Source:

- https://leafletjs.com/
- https://github.com/Leaflet/Leaflet

License:

```text
BSD 2-Clause License

Copyright (c) 2010-2026, Volodymyr Agafonkin
Copyright (c) 2010-2011, CloudMade
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
```

## OpenStreetMap

The map can use OpenStreetMap tile URLs through Leaflet:

```text
https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png
```

The app keeps visible map attribution in the Leaflet attribution control:

```text
© OpenStreetMap
```

Do not hide the attribution control. If traffic grows, move to a commercial tile provider or self-hosted tiles instead of relying on the public OpenStreetMap tile service.

References:

- https://www.openstreetmap.org/copyright
- https://operations.osmfoundation.org/policies/tiles/

## Tokyo Metropolitan Government Open Data

## CARTO Basemaps

The app includes an optional CARTO light basemap style:

```text
https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}{r}.png
```

The app keeps visible attribution for OpenStreetMap and CARTO in the Leaflet attribution control. Review CARTO terms before commercial or high-traffic use.

References:

- https://carto.com/basemaps/
- https://carto.com/attributions/

## Tokyo Metropolitan Government Open Data

Some facility entries are derived from Tokyo Metropolitan Government's `赤ちゃん・ふらっと` public information.

Source:

- https://www.fukushi.metro.tokyo.lg.jp/kodomo/kosodate/akachanflat
- https://portal.data.metro.tokyo.lg.jp/terms/

Attribution:

```text
このアプリは、東京都「赤ちゃん・ふらっと」関連データを編集・加工して利用しています。
```

The facility records are edited for map display, deduplication, categorization, and coordinates. Do not present the edited data as if it were created or endorsed by Tokyo Metropolitan Government.

## Official Facility Websites

Some entries are manually summarized from official facility websites such as shopping centers, station buildings, department stores, hotels, and complex buildings.

Operational rules:

- Use official pages as the primary source.
- Summarize only the necessary details.
- Keep `sourceName`, `sourceUrl`, `verifiedAt`, and `confidence` on every record.
- Do not copy large blocks of official text into `notes`.
- Recheck official pages before making claims about current opening hours or availability.

## Google AdSense

AdSense is optional and disabled until `ADSENSE_CONFIG` is filled in.

References:

- https://support.google.com/adsense/answer/48182
- https://adsense.google.com/adsense/terms

Operational rules:

- Keep ads clearly labeled.
- Do not place ads over the map or above the search controls.
- Do not make ads visually indistinguishable from facility cards.
- Follow AdSense review and placement policies for the published domain.