Two factor Authentication is an another effort to make your account more secure other than username and password. It is like an another layer of protection to make your account more secure. Two-factor authentication would be done through a different type of communications like bulk SMS, Voice call, email etc. Among this methods, bulk SMS is considered to be the best as it is a direct, fastest and most affordable method of communication. So, for two-factor authentication users can send OTP (a unique generated 4 or 6 digit number) through bulk SMS on customer’s mobile number. It will help you to verify users easily without any delay. Users can enable this service on any type of platform like Magento, Woo- Commerce, OpenCart etc. with the help of Magento SMS API or any other.