| 摘要 |
Applications perform secure purchasing transactions through the purchase manager which interfaces the application with a purchase device using an indirection mechanism. The purchase manager is preferably associated with an operating system and provides an application program interface (API) with which the application communicates. The application issues commands through the application program interface and these commands are mapped for execution through a dispatch table forming part of the purchase device module. The dispatch table identifies functions within the purchase device module.
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