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OTP, also known as One Time Password, is a set of one-time passwords that the system creates to secure transactions on the Internet by sending them as an email, SMS, or send to an application to verify account ownership. Most of them are 6-digit numbers or letters with a very short duration of minutes. If you enter the wrong code or enter it later than the specified time, your login will not succeed.
As mentioned, with the OTP code constantly changing, it has a short period of time that can be used once. Therefore, it can secure account access or online transactions.
OTP email is a set of one-time passwords that the system creates for secure Internet transactions. When we want to make a transaction, such as payment, money transfer, or online access to financial accounts, the system sends an OTP code to the email and customers can copy it in for authentication. Although email OTP is not as popular as SMS OTP, many businesses are still using it. Sometimes we find that authentication is available to choose between sending OTP code to a phone number (SMS) or email address, which is also convenient for customers.
