Privacy Policy

Who is responsible

OpenGTM is operated by Oliver Longhurst. For the purposes of UK data protection law, OpenGTM is the controller for the personal information described here. To ask a privacy question or make a request, email olly@oliver-longhurst.co.uk.

Reading public content and analytics

You can read OpenGTM without an account. OpenGTM and its hosting provider process the limited technical information needed to deliver and secure a website, such as IP address, browser or device information, request time, and security logs. OpenGTM does this to provide the site and for its legitimate interests in keeping it reliable and secure.

OpenGTM may use Vercel Web Analytics to understand the use of selected public pages, including the launch article, Subscribe, Pinball, and Signal Reel. This is limited to anonymous, aggregate page-use signals. Signal Reel analytics use only its canonical page path and exclude queries, fragments, signal or author details, filters, saves, follows, and identity data. OpenGTM does not intentionally send email addresses, names, score details, session replay, heatmaps, or an email-linked reading history to analytics. OpenGTM does not use advertising cookies or create advertising audiences.

Optional email updates

If you choose to subscribe, OpenGTM sends your email address and affirmative subscription choice to EmailOctopus so it can send OpenGTM updates. The legal basis is your consent. You can withdraw it using the unsubscribe link in any email. OpenGTM keeps the subscription separate from reading analytics and does not use it to build a wider profile.

EmailOctopus manages its own subscriber-list retention and suppression records. Its privacy information is available at EmailOctopus Privacy Policy.

Pinball scores

Pinball is playable without sign-in. If you submit a score, the display name, score, achieved time, and rank can be public on the all-time leaderboard and its shareable score page. Do not submit a name or other information that you do not want to be public.

OpenGTM keeps a visible ranked score for the life of the leaderboard. Authorisation and rate-limit records are short-lived; quarantined display names are redacted after 90 days and moderation audit records are retained for up to 365 days. This processing is necessary to provide the score feature you request and for OpenGTM's legitimate interests in preventing fraud and abuse. Contact OpenGTM if you need help with a public score.

Cookies and local browser storage

Control Panel preferences, such as sound, motion, and Plain Reading, stay in your browser's local storage. Pinball may keep an opaque, per-score management capability in session storage so that you can manage that score; it is not placed in a public URL.

Processors and international transfers

OpenGTM uses Vercel for hosting, security, and optional analytics; Sanity for published content; EmailOctopus for email updates; and Upstash for necessary operational state. These providers may process information in countries outside the UK. Their processing and transfer arrangements are described in their respective privacy information.

OpenGTM does not sell personal data or combine subscription and leaderboard activity into a general profile.

Your rights and choices

Subject to applicable law, you can ask OpenGTM to access, correct, erase, restrict, or provide a copy of your personal information; object to processing based on legitimate interests; or withdraw consent for email updates. Email olly@oliver-longhurst.co.uk with enough detail to locate the relevant feature or public score.

If you are in the UK and are unhappy with how a request is handled, you can complain to the Information Commissioner's Office.

Changes to this policy

OpenGTM will update this page when its data practices materially change and will revise the date above. Continued use of public reading does not require an account; optional features remain your choice.