How do you implement multi-factor authentication without annoying your users?

1 Choose the right factors

MFA typically involves two or more of the following factors: something you know (such as a password or a PIN), something you have (such as a smartphone or a token), and something you are (such as a fingerprint or a face scan). The choice of factors should depend on the level of risk and the context of the service. For example, a banking app may require a stronger combination of factors than a social media platform. You should also consider the availability and accessibility of the factors for your users. For example, if your users are in areas with poor network coverage, SMS or email verification may not be reliable.

2 Make it easy and flexible

One of the main complaints about MFA is that it adds extra steps and time to the login process. To minimize the hassle and friction, you should make the MFA process as easy and flexible as possible. For example, you can use intuitive and user-friendly interfaces, such as buttons, QR codes, or biometrics, instead of complex codes or passwords. You can also offer multiple options for users to choose their preferred factor or method, such as SMS, email, phone call, or app. You can also allow users to remember trusted devices or locations, so they don't have to repeat the MFA process every time they log in.

3 Educate and communicate

Another common issue with MFA is that users may not understand why it is necessary or how it works. This can lead to confusion, frustration, or resistance. To overcome this challenge, you should educate and communicate with your users about the benefits and importance of MFA, as well as the best practices and tips to use it effectively. For example, you can provide clear and concise instructions, FAQs, or tutorials on your website or app. You can also send notifications or reminders to your users when they need to update or verify their factors, or when there are any changes or issues with the MFA system.

4 Monitor and improve

Finally, you should monitor and improve your MFA system regularly, based on user feedback and data. You should track and measure the performance and impact of your MFA system, such as the login success rate, the error rate, the user satisfaction, and the security incidents. You should also solicit and listen to user feedback, such as surveys, reviews, or comments, to identify any problems or areas for improvement. You should then implement and test any changes or enhancements to your MFA system, and inform your users about them.