A reading apparatus includes a control unit and an interface through which the control unit transmits an output request to an electronic tag and receives tag information output from the electronic tag in response to the output request. The control unit is configured to read the tag information received by the reception unit and extract an identifying code from the tag information, store the identifying code in association with a number corresponding to a total number of times tag information including the identifying code has been read by the controller in response to the output request, and output a stored identifying code or information associated with the stored identifying code if the number associated with the stored identifying code meets or exceeds a threshold value.