Claude, the AI assistant developed by Anthropic, is gaining popularity for its strong conversational abilities and long-context support. This tutorial walks you through the entire process—from account registration and login binding to switching between multiple platforms—so you can start using Claude quickly and easily.
Claude Account Registration & Email Binding
Visit the Claude official website and click "Get Started" to access the registration page. You can sign up using a Google account, Apple ID, or directly with an email address. Gmail or Outlook are recommended to avoid issues with verification codes not arriving in domestic email services. After entering your email, a 6-digit verification code will be sent—don’t forget to check your spam folder. Once verified, set a password (at least 8 characters, mixing uppercase, lowercase, and numbers). On first login, you’ll need to accept the Terms of Service; check the box to proceed to the main interface. If you see a "Verification code expired" message, simply request a new code and enter it promptly.
Claude Multi-Device Login & Account Binding
Claude supports web login, mobile app login, and API key binding. On the web, you can enable "Remember this device" in settings to reduce frequent verification prompts. For mobile, download the official Claude app, select "Log in with existing account," and enter your credentials to sync chat history. To use the API, go to Account Settings → API Keys → Create a new key, copy it, and paste it into your application. Note that each account can generate up to 5 API keys, and each key is only shown once—store it securely. When switching devices, it’s best to log out of the current device before logging into a new one to avoid concurrent login conflicts.
Switching Between Claude Accounts & Practical Tips
Some users manage multiple Claude accounts (e.g., personal and Pro) and need to switch quickly. On the web, click your avatar in the top-right corner, select "Add account" to add another account, then use the dropdown menu to switch with one click. The mobile app currently does not support simultaneous multi-account login, but you can tap Settings → Login → Switch account, then enter the new credentials. Important: switching accounts will not automatically save the current session, so export your chat history first. If you encounter an "Unable to switch account" error, clear your browser cache or app data and try again. For team collaboration, Claude also supports Workspace binding—invite members to a shared workspace, ideal for project groups working together.
