| 摘要 |
A system and corresponding method for unlocking options in already installed software. The software is provided with all of the options on an installation medium and when the software is first received only a basic version is installed. The options are requested by a user and the customer service system provides a key based on information about the user and about the options requested. The installation software constructs a key from the same information and compares the key received from customer service. If the keys match, the requested options are installed.
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