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Cross-Device Ethereum Login: Authenticate Desktop Users via MetaMask Mobile in PHP
- Crypto wallets like MetaMask can be used for implementing passwordless login systems with high security levels.
- Users can log in to a desktop website using the MetaMask app on their mobile device, ensuring security comparable to two-factor authentication.
- The private key stored on the phone is secured by biometric identification, offering a more secure and convenient login process.
- Implementing MetaMask login in PHP allows integration with various platforms like WordPress and Laravel.
- The article provides the code for creating session tables and managing sessions in PHP for MetaMask login.
- A QR code is generated on the desktop website for users to scan with MetaMask mobile, initiating the login process.
- The login.php script handles signature verification and Ethereum address extraction for successful logins.
- The integration with MetaMask occurs through JavaScript, which requests Ethereum account details and handles signing challenges.
- Login success is confirmed by validating the Ethereum address, completing the authentication process.
- For existing user integration, the process involves linking Ethereum addresses to user accounts, enabling seamless login via Ethereum addresses.
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