def process_payment(idempotency_key, payment_details): # Check if this key has already been processed existing_transaction = database.get_transaction_by_key(idempotency_key)
E-wallet code must be built with a "zero-trust" mindset. e wallet code
Modern e-wallets rely on Multi-Factor Authentication (MFA). The code integrates with SMS gateways or TOTP (Time-based One-Time Password) libraries like Google Authenticator. e wallet code
Want to go deeper? Try building a simple wallet with and add a mock payment gateway. You’ll learn more than any tutorial can teach. e wallet code