Code

One time password every time user logs in?

One time password every time user logs in?
  1. What is the advantage of one-time password?
  2. What triggers OTP?
  3. How long does OTP code last?
  4. Can OTP be predicted?

What is the advantage of one-time password?

The foremost advantage of and primary reason for OTPs is security. Since a single-use password will change with each login attempt, the risk of an account being compromised is drastically reduced, if not eliminated. One-time passwords are randomly generated strings of characters that are virtually impossible to guess.

What triggers OTP?

One Time Password as SMS Message

Once the user has begun his login attempt, filling in his username and the correct password, an SMS OTP is sent to the mobile number connected to his account. The user then enters this code shown on this phone in the login screen, completing the authentication process.

How long does OTP code last?

The 8-digit code is valid for 30 seconds. It sounds simple, and it is. Here is an example of OTP in online payment.

Can OTP be predicted?

Without knowing the seed value, hackers can't reverse engineer the function and predict the next OTP. The S/Key OTP system, for instance, uses this hashing function.

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