Whenever possible, allow users to autofill payment details. Use browser autofill for common form fields such as name, address, email ID, phone number, and password. Enable browser-saved data for card details too, along with options like credit card scanning and quick API integration.

Make it easier for users by enabling autofill for one-time passwords (OTPs) received during payment processes. This reduces interaction costs and prevents the hassle of toggling between pages.

While autofill enhances user convenience, ensure robust security measures are in place to protect sensitive information. Regularly update your security protocols to guard against data breaches, and consider multi-factor authentication for additional safety.