Information processing apparatus, information processing method, information processing program, and information processing system

An information processing apparatus, comprising:

• a database generator that associates a registration-use detection value detected by a sensor section included in a wearable device worn by a user with an environment state to be provided to the user when the registration-use detection value is detected, and registers the associated registration-use detection value and environment state;
• a matching section that checks a new detection value detected by the sensor section against the registered registration-use detection value to perform matching, and determines whether a difference between the new detection value and the registration-use detection value is less than or equal to a matching threshold;
• and
• an output controller that controls output when the difference is determined to be less than or equal to the matching threshold, the output being controlled on a basis of the environment state registered in association with the registration-use detection value.

An information processing method, comprising:

• estimating a user state;
• estimating, on a basis of the user state, an environment state to be provided to a user;
• and
• controlling output on a basis of the environment state.

An information processing system, comprising:

• a wearable device;
• and
• an information processing apparatus that includes
• a user state estimator that estimates a user state of a user who is wearing the wearable device,
• an environment estimator that estimates, on a basis of the user state, an environment state to be provided to the user, and
• an output controller that controls output on a basis of the environment state.