Privacy policy
This policy explains how WEB3.0 Inc. (“we” or “us”) handles information on WallTrampoline.com (“the site”). You don’t need an account to browse the site, and we try to collect as little as possible.
Effective: November 14, 2026 · Last updated: November 15, 2026
Contents
1. What we collect and why
When you send a submission
- What you write: for example, a facility or event name, location, wall and session details, prices, official website links, or a correction request. We use it to review and publish information on the site.
- The language you used (English or Japanese) and, if you choose to tell us, your connection to the facility or event (staff, visitor or other).
- Your email address (optional): we use it only to contact you if we need to check something about your submission. We never publish it and don’t use it for anything else.
To prevent spam and abuse
- IP address: we don’t store it as is. We first turn it into a one-way hash mixed with a secret value, so the original address can’t be read back.
- We count submissions per hash per hour to stop too many submissions from one source. These counts are deleted automatically, usually within a day.
- We also store the same hash with each submission, so we can spot repeated spam from one source.
- To detect automated submissions, the form also checks how quickly it was sent and includes a hidden field. These are not stored.
- The form also uses Google reCAPTCHA (see “Services we use” below). We store only the resulting score (a number from 0.0 to 1.0) with the submission.
Server logs
- When you open a page, the Google Cloud servers that run the site automatically record technical details such as your IP address, browser type, the page you opened and the time. We use these logs only to fix problems and deal with misuse. They are deleted after a set period (usually about 30 days).
Stored on your device
- Display theme (auto, light or dark): saved in your browser’s local storage only when you choose one.
- Your country: when you pick a country in the facility or session lists, we save it in your browser so we can show it first next time. If you haven’t picked one, the page guesses from the page language and your browser’s language settings. This happens inside your browser and isn’t sent to us.
- These settings stay on your device and are not sent to us. You can delete them in your browser settings.
- Admin login cookie: used only when the site operator signs in to the admin pages. Visitors don’t receive it.
- The site itself does not use advertising or tracking cookies.
2. Services we use
We use the following services to run the site. Information is sent to them only as described here.
- Google Firebase / Cloud Firestore: stores submissions and site data. The data is kept in Japan (Tokyo).
- Firebase App Hosting (Google Cloud): the servers that build and deliver the pages. These servers are in Taiwan, the closest region to Japan that the service offers.
- Google Cloud Vertex AI (Gemini): translates submissions between English and Japanese. When we open a submission for review, the descriptive text (such as the address, wall details and notes) is sent for translation in the Tokyo region. Names and your email address are not sent. Under Google Cloud’s terms, this data is not used to train Google’s AI models.
- Google reCAPTCHA: on the submission page only, checks whether a submission is being sent by a person or a program. When the page loads and when you press Send, Google receives information such as your IP address, browser details and how you use the page, and may use cookies. Google’s Privacy Policy and Terms of Service apply.
- Google Apps Script (Gmail): emails us when a new submission arrives. The email contains only the type of submission, its name, the language and a link to our admin page — not your email address.
- Google Maps: the map loads only when you press “Show map”. Once it loads, Google may receive your IP address and use cookies. See Google’s privacy policy.
- YouTube videos: on skill and event pages, a video loads only when you press play, using YouTube’s privacy-enhanced mode (youtube-nocookie.com). Once it loads, Google may receive your IP address and use cookies. See Google’s privacy policy.
- Instagram posts: on event pages, an Instagram post loads only when you press play. Once it loads, Meta may receive your IP address and use cookies. See Instagram’s privacy policy.
- Links to other sites: official websites, social media, YouTube and so on. When you follow a link, that site’s own privacy policy applies.
4. Analytics
We don’t currently use Google Analytics or any other analytics tool, and we don’t track clicks on links to other sites. If we add analytics in the future, we will update this page first and ask for your consent before using any measurement cookies.
5. Children under 18
We treat anyone under 18 as a minor, wherever they live.
- If you are under 18, please use the site together with a parent or guardian.
- Please don’t send names, photos, birth dates, school names, home areas or any other details that could identify someone under 18.
- In event results, we show only the names of adult athletes that the organizer has made public. We don’t show the names of athletes who are under 18 or whose age we don’t know.
- If we add athlete profiles in the future, we will list a minor only with confirmed consent from a parent or guardian.
- If a parent or guardian asks us to remove information about their child, we will hide it promptly.
6. Seeing, correcting or deleting your information
You can ask us to show, correct, stop using or delete information about you — including your name or photo if it appears on the site. Email contact@webthird.co.jp. We will confirm that the request comes from you (or your parent, guardian or representative) and respond promptly.
7. Keeping information safe
- All data is read and written only on our servers. Browsers can’t access the database directly.
- Only the site operator can sign in to the admin pages.
- All connections to the site are encrypted (HTTPS).
8. Visitors outside Japan
The site is run by a company in Japan. Data is stored mainly on Google servers in Japan (Tokyo), and pages are built on Google servers in Taiwan. Some Google services we use, such as email, may process data in other countries. If you use the site from outside Japan, your information will be transferred to and processed in Japan and these locations.
9. Changes to this policy
We may update this policy when needed, for example when we add a new feature. We will announce important changes on the site.
10. Contact
WEB3.0 Inc. — contact@webthird.co.jp. See also our Contact page.
Effective: November 14, 2026 · Last updated: November 15, 2026