How signing in works here
Most sites check a password against a copy kept on their server. This one keeps no copy of anything, so there is nothing to check against. Your card is stored in the browser itself, and the browser hands it over as soon as the page loads. That is why the box above already shows your pass if you made one on this device.
Signing in on a new phone or laptop
- On the old device, open your profile and press Copy key code.
- Send the code to yourself in a way you trust, such as your own notes app that syncs, or type it across.
- On the new device, open this page, paste the code into the box and press Open this card.
The card opens with the same name, colour, locks and best score. Both devices now hold their own copy; progress made on one does not flow to the other unless you copy the code again.
If the code will not open
- Starts wrong: a key code always begins with DLKEY- in capitals. If the start is missing, copy it again.
- Cut short: codes are long. Some chat apps trim or wrap them; paste into a notes app first and check the end is there.
- Extra characters: spaces and line breaks at the ends are ignored, but a space in the middle breaks the code.
Still stuck? Write in from the contact page and say what the box shows; please leave the code itself out of the message.
Keeping the card safe
A key code is a copy of your card, so treat it like one. It cannot reach money or personal details, because the card has none, but anyone holding it can open your progress. The account security checklist has more habits that apply to every sign-in you use.
