Patent ID: 8122483

Claim:
A nontransitory computer-readable recording medium, including: a document file recorded thereon, the document file comprising: electronic document data that is available for use by a user; usage location information indicating one or more usage locations in which use of the electronic document data is less restricted than in other locations; and a data management program that causes a computer to: (i) make, in response to a user request for use of the electronic document data, a request for usage location information indicating a current location of the user, (ii) judge, upon acquisition of the user location information, whether or not the current location of the user indicated by the acquired user location information is included in the one or more usage locations indicated by the usage location information, (iii) if the judgment results in an affirmative, permit use of the electronic document data within a first usage pattern, and (iv) if the judgment results in a negative, entirely prohibit use of the electronic document data or permit use of the electronic document data within a second usage pattern that is more restricted than the first usage pattern; wherein while the electronic document data is in use within the first usage pattern, the data management program further causes the computer to make another request for user location information indicating a current location of the user, to newly acquire the user location information, and to judge whether or not the current location of the user indicated by the newly acquired user location information is included in the one or more usage locations indicated by the usage location information, and if the judgment made based on the newly acquired user location information results in a negative, the data management program causes the computer to (i) forcefully terminate the use of the electronic document data within the first usage pattern and (ii) permit use of the electronic document data within the second usage pattern or to entirely prohibit use of the electronic document data.