A web-based encryption used to block bots from using (and often abusing) internet services.
A verification code is a web-based encryption method designed to prevent the activity of digital bots. This code can take many forms, one of the most popular of which is the captcha image that websites use to screen visitors. However, a verification code may also be an actual code sent to an email or phone number as a way of verifying the ownership of said email or phone number. This is usually done when registering for an account on an internet service.
Verification codes are important because they help to secure user accounts from bots and hackers. Recently, user-facing security measures such as Two-Factor Authentication (2FA) also use verification codes.