In an era where digital interactions dominate our daily lives, securing user identities and transactions is more critical than ever. Passwords alone are no longer sufficient to protect sensitive information, leading to the widespread adoption of Two-Factor Authentication (2FA). At the heart of this security framework is the One-Time Password (OTP). Whether you are authorizing a bank transfer, resetting a forgotten password, or logging into a new application, OTPs provide that essential secondary layer of defense. But what exactly happens behind the scenes in the few seconds between requesting a code and receiving it on your phone? The Step-by-Step Process: How OTP SMS Works To the end user, receiving an OTP seems instantaneous and simple. However, the backend process involves a highly synchronized sequence of technical handshakes that occur in the blink of an eye. The Trigger Event: The process begins when a user initiates an action requiring verification, such as attempting to log in...