DATA PROTECTION MECHANISM

摘要

A control system in a device allows for installation of application packages to impart different position data processing abilities to the device. The position data may be generated by an electronic pen, and the control system may be arranged in such a pen. Each application package comprises a license specification and an application program. The application program is configured to access the position data and device functions via the control system. The license specification provides for digital rights management and data protection. For example, the license specification may be used by the control system to verify an application program for installation in the device. Further, the license specification may cause the control system to selectively allow the application program to access a specific device function only if it is listed in the license specification.