How do I sign up for the Double?
Create your theDouble account using email or Google in just a few clicks.
Last Update Apr 15, 2026
Go to the theDouble sign-in page: https://cardtr.ee/auth/signin
- Click Sign Up
- Enter your email ID and password, then click Create Account
- A verification email will be sent to your registered email address
Prefer to use Google?
Click Continue with Google to sign up instantly using your Google account.
For further assistance, use our in-app feedback tool or contact [email protected]