摘要 |
In an authentication method for two programs which are executed when it is confirmed by authentication that a user is a valid user, pre-registered first reference data is acquired when authentication is performed for a first program to be activated earlier, and authentication data inputted by a user when the authentication for the first program is performed is acquired. Authentication for execution of the first program is performed with the use of the first reference data and the authentication data. Pre-registered second reference data is acquired when authentication is performed for a second program to be activated later, and authentication for execution of the second program is performed with the use of the second reference data and the authentication data already acquired at the authentication for the first program.
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