Two Factor Authentication (2FA) is an added layer of security that requires a user to provide some extra information, such as a One Time Token or password, in addition to their username and password to access their account. In this tutorial, we implemented 2FA using Twilio's Verify API for a CakePHP application, which sends a token as an SMS to the user's phone number at the login stage. The user is then required to provide the token to access the secure area of the app. We also implemented a second layer of authentication that requires the user to verify the token via SMS before accessing the secured area. To prevent bypassing the verification stage, we created a custom middleware called `SMSVerificationMiddleware` that redirects the user back to the token verification page if they try to access a permitted route without providing a valid One Time Token. The entire codebase for this tutorial is available on GitHub, and we hope you found this tutorial helpful in implementing 2FA for your CakePHP application.