Legal
Cookie policy
This website sets no cookies. The only thing stored in your browser is your light/dark theme preference in localStorage, which is a functional preference and does not require consent.
Most cookie policies are long because the site behind them uses a lot of cookies. This one is short for the opposite reason.
What is actually stored in your browser
One item, and here it is in full:
| What | Where | Contains | Expires |
|---|---|---|---|
| Theme preference | localStorage | light, dark, or system | Never — until you clear your browser storage |
That is the entire list. It is written when you use the theme toggle in the site header, and it is read on your next visit so the page does not flash the wrong colour scheme at you. It is set by next-themes, a client-side library that runs in your browser.
Why there is no consent banner
Article 5(3) of the ePrivacy Directive (2002/58/EC, as amended by 2009/136/EC) requires consent before storing information on a user's device — with an exemption for storage that is strictly necessary to provide a service explicitly requested by the user.
Your theme preference falls squarely inside that exemption. It is:
- Set only by your own action. Nothing is written until you click the theme toggle.
- A record of that action and nothing else. The value is one of three words. It is not an identifier, it carries no random ID, and it cannot distinguish you from anyone else who picked the same theme.
- Never transmitted. It stays in your browser. It is not sent to our server, it is not readable by us, and there is no third party involved.
- Not used to track anything. There is nothing to correlate it with — this site runs no analytics.
The European Data Protection Board's guidance on the technical scope of Article 5(3) (Guidelines 2/2023) treats user-interface customisation storage of exactly this kind as user-requested. So a consent banner here would ask you to permit something you already asked for, and would gather your consent for tracking that does not happen. We would rather tell you plainly what is stored.
If you disagree, you do not need our permission to remove it: clear site data for batterydigitalpassport.com in your browser and the preference is gone. The site works identically without it — you will just get your operating system's colour scheme on each visit.
What this site does not do
To be specific, because "we use only essential cookies" is a sentence that often hides a lot:
- No Google Analytics, Plausible, Matomo, Fathom, or any other analytics.
- No Meta pixel, LinkedIn Insight tag, Google Ads or remarketing tags.
- No A/B testing, heatmap, session-replay or consent-management tooling.
- No embedded YouTube, Vimeo, Google Maps, chat widget or social share button — each of which would set third-party cookies.
- No fonts or scripts loaded from a third-party CDN.
There is therefore no cookie table to publish, no vendor list, and no consent to withdraw.
Server logs
Serving a web page necessarily involves your browser talking to a server, and our hosting infrastructure keeps ordinary access logs that may include IP addresses. That is not storage on your device and is not within scope of Article 5(3). It is covered in the privacy policy.
The contact form
The contact form does read one thing from your browser: a timestamp recorded when the form is rendered, held in the page itself and submitted with the form so we can reject automated submissions. It is not persisted in your browser between visits and it is discarded on our side as soon as the check is done.
If this changes
If we ever add something that does require consent, this page will say so and a consent mechanism will ship at the same time — not after. Until then, there is nothing here to opt out of.
Last updated: 19 July 2026. Questions: {{PRIVACY_CONTACT_EMAIL}}.