Cookies

The short answer: we don’t use cookies or trackers.

No cookies, no trackers

underhilladventures.com sets no cookies. It has no analytics, advertising, tracking pixels, social media buttons or third-party code, so there is nothing to accept or decline.

What the site does keep in your browser

To remember settings and (only if a teacher switches it on) class results, the site uses your browser’s own storage. It stays on your device and is never sent to us. All keys start with ua-.

Saved in this browser (localStorage):

Key	What it holds	Why	How long
`ua-a11y`	Comfort and reading settings: font, text size, spacing, background colour, contrast, calm mode, sounds, Listen settings and voice speed, support options, and any settings a teacher has locked	So the site looks and sounds the way the child needs on every page	Until changed or removed
`ua-profiles`	Only if a teacher adds children in teacher support settings: each child’s first name or initials (12 characters at most) and their comfort settings	So each child on a shared device can pick their own settings	Until removed
`ua-a11y-profile`	Which of those children’s settings are in use (a short code, not a name)	To remember whose settings are switched on	Until removed
`ua-level`	The chosen school year (3–6) and challenge (Easy, Medium or Hard)	So the next adventure starts at the same level	Until changed or removed
`ua-class-device`	Whether class device mode is switched on (“on”, or not there at all). Off by default	So the site knows whether to keep class results	Until switched off or removed
`ua-class-results`	Only if class device mode is on: for each finished adventure, the first name typed, the adventure, year and challenge, date, stars, clue and question counts, and skills practised. Not the answers a child types	So a teacher can see a class summary on that device	Until a teacher taps “Clear all” or “Remove all”
`ua-sound`	Older versions only: whether sound effects were off. The current site reads it once to carry the choice over and does not write it	To keep an earlier choice	Until removed

Kept only while the tab is open (sessionStorage):

Key	What it holds	Why	How long
`ua-built-story`	A story made with the Story Builder demo	To pass the story from the Story Builder page to the adventure page	Until the browser tab is closed

How to remove it

Use “Remove all children’s data from this device” on the teacher page, or clear this site’s data in your browser settings. More detail is in our privacy policy.

Last updated: [Date of publication]. Draft prepared 25 October 2026.