Privacy and local storage
Your SILLA 1000 stamp history stays only in this browser.
What is stored locally
We store the place slug and display name, collection time, device-GPS distance result, and a random local device ID in IndexedDB. Precise GPS coordinates are discarded after the distance check. This indicator is not server-attested.
No server sync
Stamp history and the local device ID are not sent to SILLA 1000 servers, advertisers, or analytics providers.
Retention and deletion
The data remains until you delete it below or clear SILLA 1000 site data in your browser. Delete all immediately removes every stamp and the local device ID and cannot be undone.