The site remembers you without an account — which means each device keeps its own board. Move it with a one-time code: generate on one device, redeem on the other.
A code carries your starred coins, watched pools and logged calls — nothing else. No keys, no funds, no personal information; there is nothing in it to steal. Each code works exactly once, dies the moment it’s redeemed, and self-destructs unused after 10 minutes. Sending changes nothing on this device. No account, no email, no custody. Ever.