Homonym: SMS code (Verification)
An SMS code is a short numerical or alphanumeric sequence sent via text message to verify a user's identity or authorize access to an account. This method is commonly used in two-factor authentication (2FA) to enhance security, ensuring that only the rightful owner can access sensitive information.
When a user attempts to log in to an account, a unique SMS code is generated and sent to their registered mobile phone. The user must then enter this code into the website or application to complete the login process, providing an extra layer of protection against unauthorized access.