Method, program, storage medium, server and image filter for displaying a three-dimensional image

摘要

A business model is provided which enables proactive development of 3D stereoscopic image data distribution services, while preventing the providing servers' interests from being hurt by unauthorized copying. A user terminal sends a disk ID, which has been encrypted and pre-stored in a distributed media, to a service providing device via the Internet. The service providing device sends a cryptographic key to decrypt said encrypted disk ID to the user terminal via the Internet. The user terminal decrypts the encrypted disk ID by the received cryptographic key, and once the cryptographic key is determined valid a 3D stereoscopic image display function of 3D software is enabled and the 3D stereoscopic image data stored in the distributed media is displayed as a 3D stereoscopic image.