An information providing method includes (i) starting, by a control device, a communication session with a server in response to establishment of a communication connection with a terminal, and (ii) issuing, by the server, temporary access information for accessing a service in a manner that depends on the communication session. The access information is different for each communication session. The information providing method further includes (iii) notifying, by the control device, the access information to the terminal, and (iv) providing, by the server, target information collected from the control device to the terminal in response to access from the terminal based on the access information. Accordingly, the threat to security when providing information of the control device is reduced.