Privacy Policy

Hwanseungkan shows public data on fast subway transfer car and door numbers. There are no accounts, and nothing at all that identifies you is collected. A page is the same for everyone, and the server does not read who opened which station.

The station name you type

Text typed into the search box only filters the list on your device. It is not sent to a server and not kept in this browser.

Copying a link

Copy link to this direction puts the address on your device's clipboard. The copied address does not go to our server. Only the fact that a copy happened is counted, in the anonymous signals below.

What we never send

• Which station or transfer line you looked at, in any form.
• IP addresses and device information (User-Agent) are not read, and no cookies are used.
• No notifications are sent, and permission for them is never requested.
• Connections leaving this site are blocked at the browser level.

This site is served through Cloudflare, which automatically injects a visit-tracking script into our pages. We did not add it, so we have configured your browser to refuse it. That means the tracking call does not go out. The tag itself is still injected by that layer though, so we would rather you know about it than not. We do not use cookies.

Anonymous signals the server receives

• Step names (page opened, a station was picked, a station page opened, a transfer line page opened, the link was copied, arrived by a shared link, first touch on the page), the interface language, the channel label we wrote into our own link or the domain of the previous page (never the path or query), and the date you arrived (day only, no clock time).
• Which station it was is not included. Only the fact that a station page opened is counted.
• If something breaks on screen, that fact reaches the same place: we send only the error name (TypeError, for example) and an eight-character fingerprint of where it happened. We never send the error message, the stack, or the address. At most three per visit.
• These signals live in short-term server logs only and are never shared with third parties. We may show Google AdSense ads to cover running costs; Google may then use cookies or ad identifiers under its own policy.

Sources

Fast transfer information for railway stations (15151816), published by Korea's Ministry of Land, Infrastructure and Transport on the Public Data Portal. No restriction on use. Data as of 2025-11-13.

How to delete

We keep nothing of yours, so there is nothing to delete. There is no record on the server to delete.

Business registration details and a contact address will be posted here once registration is complete.