Homonym: OTP (One-Time)
An OTP, or One-Time Password, is a security feature used to verify a user's identity during online transactions or logins. It is a temporary code that is generated and sent to the user, typically via SMS or email, and is valid for only a short period or a single use. This helps protect accounts from unauthorized access, as even if someone knows the user's password, they would still need the OTP to gain entry.
OTPs are commonly used in two-factor authentication (2FA) systems, which add an extra layer of security beyond just a username and password. By requiring both the password and the OTP, services like banking apps and social media platforms enhance user safety against potential threats such as phishing or hacking.