Integrating Voice Call OTP Verification in a Symfony Application with Twilio

1 · Twilio · Jan. 5, 2024, 1:40 a.m.
One-time passwords (OTPs) provide an additional layer of security by generating temporary, unique codes that users must enter to complete specific actions or access particular features. While text messages serve as a common method of OTP delivery, voice-call OTP verification is also gaining popularity, due to its accessibility and reliability. When used, the user receives a voice call that verbally provides their verification code, which they subsequently enter into the application. In this tut...