1. Cookies we set
The following cookies are required for the service to function.
| Name | Purpose | Lifetime |
|---|---|---|
do-you-know-well-session |
Keeps you logged in. HttpOnly, SameSite=Lax, Secure in production. | 120 minutes idle |
XSRF-TOKEN |
Protects forms against cross-site request forgery. | 120 minutes |
__cf_bm, cf_clearance |
Set by Cloudflare for bot management when needed. | Up to 30 minutes (cf_bm) / 30 days (cf_clearance) |
2. Local browser storage
These are stored in your browser only and never sent to our servers.
| Key | Where | Purpose |
|---|---|---|
dykw:sound:enabled |
localStorage | Remembers your sound on/off preference. |
dykw_tutorial_seen_v1 |
localStorage | Hides the tutorial after you've seen it once. |
dykw:local:v1 |
sessionStorage | Holds the in-progress Play Local game so a refresh doesn't lose it. Cleared on completion or tab close. |
3. Managing or clearing
You can clear cookies and local storage from your browser settings at any time. Doing so will log you out of Online mode and reset your sound and tutorial preferences. Local game data in sessionStorage is cleared automatically when you close the tab.
4. Why no banner?
EU and UK rules require a consent banner only for non-essential cookies (typically advertising, analytics, and cross-site tracking). All of the items above are essential to operating the service or to your stated preferences, so consent is not required - we still owe you this disclosure, which is what this page is for.
5. Related
Full data handling details: Privacy Policy. Account rules: Terms of Service.