When developing an eWallet app, integrating robust payment security features is crucial to protect user data and transactions. Key features include end-to-end encryption to safeguard data during transmission, multi-factor authentication for secure user access, tokenization to replace sensitive card details with secure tokens, and biometric verification like fingerprint or face recognition. Additionally, fraud detection systems and PCI-DSS compliance ensure the app meets industry security standards, providing a safe and reliable digital wallet experience