Identifying Devices Uniquely (Windows CE 5.0)
You may need to implement a mechanism to uniquely identify a Windows CE–based device. For example, you may need to identify each cell phone that runs your run-time image for billing and security purposes.
Windows CE uses the DEVICE_ID structure to hold the unique device identification number.
You can implement the I/O control code IOCTL_HAL_GET_DEVICEID in OEMIoControl to return DEVICE_ID to an application.
See Also
How to Develop an OEM Adaptation Layer | Implementing the OEMIoControl Function
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