Service providing system, service providing device, service providing method, and service providing program

A service providing device providing services to a plurality of users, the service providing device comprising:

• a memory;
• and
• a processor coupled to the memory and configured to function as:
• a receiving unit configured to receive an authentication response affixed with a user signature from a user terminal of each user who received an authentication request requesting authentication for executing a predetermined process;
• and
• a requesting unit configured to transmit an execution request to a system executing the predetermined process so that the predetermined process is executed with respect to each user upon successful signature verification for all the plurality of users.

A service providing device providing services to a plurality of users, the service providing device comprising:

• a memory;
• and
• a processor coupled to the memory and configured to function as:
• a receiving unit configured to receive a confirmation request for each user from a system that verified a signed document that is affixed with a signature of a user who authenticated to execute a predetermined process;
• and
• a requesting unit configured to transmit an execution request to a system executing the predetermined process so that the predetermined process is executed with respect to each user when the confirmation request is received with respect to all the plurality of users.