Question

Why does Lighter require signing instead of a password?

Answer

Signing is more secure. It proves ownership of your wallet cryptographically, eliminating weak passwords and reducing phishing risks.

Last updated:

July 1, 2026

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Do I need to sign every time I log in?

No, you only need to approve Sandwich as an integrator once per account. Sandwich will then be approved as an integrator until our integrator approval expires or you revoke our integrator approval. You can revoke integrator approval at any time.

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Can Lighter ever access or move my funds through message signing?

No. Message signing cannot move assets. Only blockchain transactions that you explicitly approve can transfer funds.

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Does Lighter store my private key?

No. Your private key remains inside your wallet. Lighter only receives the signed message, never your private key.

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What exactly am I signing?

You are signing a human-readable message that proves wallet ownership. Lighter does not ask you to sign anything that gives permission to move funds.

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Why does my wallet pop up asking me to sign a message?

Your wallet prompts you to sign so Lighter can confirm that you are the owner of the connected wallet. This prevents unauthorized access and helps protect your account.

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