An electronic picture taking apparatus comprises a zoom lens system and an image pickup device. An accounting module receives subscription-based application download data from the one or more application download servers for each subscription-based application downloaded by a wireless device, and subscription-based application deletion data from each wireless device that has deleted a subscription-based application. During die attach, an optical hole reader retrieves the ID code of each of the IC devices, and a computer system stores the retrieved ID codes in association with the lot numbers of the ICs attached to the lead frames.