The present disclosure provides an information processing system and a control method capable of maintaining or improving the reliability of an emotional value. The information processing system comprises: a communication unit that acquires information relating to an interaction between objects from a sensing device that detects the interaction between the objects; an emotional information database configured by accumulating evaluation values used when calculating an emotional value for each object generated on the basis of information relating to interaction between the objects; an authentication unit configured to authenticate a sensing device that detects interaction between objects and issue authentication information to the sensing device; and a verification unit configured to verify the information related to the interaction transmitted from the sensing device based on the authentication information issued to the sensing device; and an approval setting unit configured to approve an accumulation of interaction detection or information related to the interaction in the emotional information database.
Information processing system and control method