what is otp number

An OTP or One Time Password is a temporary, secure PIN-code sent to you via SMS or e-mail that is valid only for one session. It is a randomly generated numeric or alphanumeric string of characters that authenticates a user for a single transaction or login. OTPs are used as a security measure by many online services such as Google or Facebook to protect user accounts. They are generated randomly and are often sent to a users phone number or email address. OTPs can be delivered through various means such as SMS, email, or mobile device apps. The OTP values have minute or second timestamps for greater security. OTP security tokens are microprocessor-based smart cards or pocket-size key fobs that produce a numeric or alphanumeric code to authenticate access to the system or transaction. The OTP is mandatory for authorizing transactions and account renewals. Overall, OTP codes are an essential security measure for online services, and it is important to understand how to access and use these codes properly.