Privacy policy

Last updated: 2026-09-29

kiban.alamone.net ("the site") is a non-commercial price-information site for used arcade PCBs. This policy explains what information the site collects and how it's handled.

Browsing only

You can browse without an account. Your display language, currency, theme, and favorites (★) are stored in your browser's localStorage and are never sent to us.

Accounts (optional)

If you sign in with Google or LINE, we receive and store a minimal account record:

• Google: your email address, display name, and profile picture.
• LINE: your LINE user ID, display name, and profile picture (no email address).
• The games you favorite (stored with your account so they sync across devices).

We keep you signed in with a signed, HttpOnly session cookie. We use no advertising or tracking cookies. Sign-in itself is handled by Google/LINE under their own privacy policies. While you are signed in, the profile picture shown in the site header loads directly from Google's or LINE's servers, so that request reaches them; it is the only thing the site loads from another company.

Server logs

For security and abuse prevention, our web server records standard request logs (IP address, user agent, requested URL, timestamp). Full IP addresses are used only for security and abuse prevention and are deleted after 14 days (an address that triggers our abuse protection is kept for as long as it stays blocked). For visitor statistics we keep a shortened form with the last part of the address removed, for up to one year. Analytics are aggregated and self-hosted — we use no third-party analytics or advertising.

How we use it

Only to authenticate you, sync your favorites across devices, and operate and secure the site.

Sharing

We do not sell or share personal data, apart from Google/LINE handling your sign-in.

Your choices

You can sign out at any time. To delete your account and associated data, contact us at the address below. Preferences stored in your browser can be cleared from your browser at any time.

Other

The site is operated from the United States, and data is processed there. The site is not directed at children. We may update this policy; the date at the top reflects the latest version.

Contact

Questions about this policy: alamone@gmail.com