The short version
- No cookies. No analytics. No adverts. No scripts, fonts or pictures from anyone else’s servers.
- One item in your browser’s local storage, oureons-motion, and only if you set the Motion switch differently from your device’s own setting.
- A few facts about your device, such as screen size and your reduced-motion setting, are read inside your browser to lay out the page. They are never sent anywhere.
- To remove the setting, switch Motion back to match your device, or clear this site’s data in your browser.
What this page covers
A cookie is a small file that a website asks your browser to save. Browsers offer other places to keep things as well, such as local storage and session storage. UK law treats all of them alike: the Privacy and Electronic Communications Regulations 2003 (PECR), regulation 6, says a website may not store information on your device, or read information from it, unless you have been given clear information and have agreed, or an exception applies.
This page covers every use of your device’s storage by oureons.com, and the ways the site reads from your device. How we handle personal data in general is in our privacy policy.
What Our Eons keeps on your device
| Name | Where | What it holds | When it is set | How long it lasts | Why |
|---|---|---|---|---|---|
| oureons-motion | Local storage | One word: “full” or “reduce” | Only when you use the Motion switch to choose something different from your device’s own reduced-motion setting. If you switch back to match your device, it is removed. | Until you switch back, clear this site’s data, or your browser clears it | So every page opens with the amount of movement you asked for |
That is the full list. Nothing else is written to cookies, local storage, session storage or IndexedDB. You can check for yourself in your browser’s developer tools, under the Application or Storage tab.
If your browser blocks storage, the switch still works, but only for the page you are on.
Your browser also keeps its ordinary cache of the pages, pictures and fonts it has fetched from us, so that it needn’t download them again. That is part of how browsers work and isn’t something the site does.
What Our Eons reads from your device
Some of what the site does depends on facts about your device. These are read inside your browser, used straight away and not sent to us or to anyone else.
- Reduced motion. Whether you have asked your device to keep animation to a minimum. If you have, the drawings stay still and nothing moves on its own. We respect it unless you use the Motion switch.
- Screen and input. The size of the window and the pixel density. They set the layout, and how sharp the drawings are.
- How far you have scrolled. Surface to Core and The Walk read your scroll position to update the depth or time gauge. This happens on the page, like any scrolling page.
Why none of this needs a banner
PECR lets a website store or read information without consent in some situations. The ones relevant here are in Schedule A1 to the regulations, most of which came into force on 5 February 2026 under the Data (Use and Access) Act 2025.
- Adapting the site to your preferences. This covers storage or access whose only purpose is to adapt how the website looks or works to your preferences, as long as you are told clearly what it is for and have a simple, free way to object. The Motion setting, and the reading of your screen size and reduced-motion setting, are used for that and nothing else. You are told here, and you can object whenever you like by switching Motion back or clearing your site data. The site works without any of it.
- Strictly necessary for a service you asked for. This covers technical storage that is strictly necessary for a service you have requested, and its examples include recording selections you have made on a website. The Motion setting is a selection you have made, kept so that the site does what you asked on the next page.
We use these things for the purpose we have given and no other. They aren’t used for measurement, advertising or tracking, and they aren’t combined with anything. If we ever wanted to use them for something else, we would ask for your consent first.
We think this is the right reading of the law. It is the law and the Information Commission’s guidance on “storage and access technologies” that matter, not our opinion, so if you disagree or have a concern, tell us at privacy@fallinghippo.com.
What other people’s services might set
Nothing on oureons.com loads from another company’s servers: not fonts, not maps, not pictures, not scripts. Our content security policy tells your browser to refuse anything that tries.
Our web host, Cloudflare, may in some situations set a security cookie, usually to tell people from automated attacks. That would be strictly necessary for keeping the site safe, and wouldn’t need consent. If we find one is set, we will list it here.
If you follow a link from an Our Eons page to the British Geological Survey, a journal or any other site, that site’s own cookies and policies apply from then on.
How to remove what is kept
- The Motion setting. Switch Motion back so that it matches your device’s setting, and the site removes it at once. Or clear this site’s data.
- Everything the site keeps. In your browser’s settings, clear this site’s data. The wording differs between browsers, but it is usually under Privacy, then Site settings or Cookies and site data, then oureons.com. Closing a private or incognito window also clears it.
Changes
If we add anything that stores or reads information on your device, we will update this page first, change the date at the top, and ask for your consent where the law requires it.
- 11 November 2026. First version.
Questions
Email privacy@fallinghippo.com. Our registered office is FALLINGHIPPO LIMITED, 71-75 Shelton Street, London, England, WC2H 9JQ, company number 17415391.