One Time Password

The most significant benefit provided by OTP is that, in difference to stationary passwords, they are not susceptible to replay attacks, which means a possible interloper who maintains a record of one time password that was by now employed to sign into a service or to carry out a transaction will not be capable of abusing it, as it will no more be suitable. A second major benefit is that a user, who employs the similar password for manifold systems, is not made susceptible on all of them, if the pass code for one of these is obtained by an invader.