Abstract: An information processing apparatus comprising: a receiver that receives data indicating a state of a detection object detected by a state detection unit; and an information transmitter that transmits state information to an external apparatus based on the data, the information transmitter transmitting the state information to at least selected one of: a first external apparatus determined to be at a short distance from the detection object; a second external apparatus determined to have been in proximity to the detection object; and a third external apparatus that is preliminarily determined.

Abstract: This headup display includes a projection portion projecting prescribed information initialized to a first display color on a display board arranged in a user's gaze direction, a detection portion detecting a background color visually recognized by the user through the display board, and a control portion performing control of adjusting the first display color on the basis of the background color detected by the detection portion and the first display color and displaying the prescribed information in the adjusted display color.