using a USB HID device

[Roger Binns]

Martin v. Löwis wrote:
> Notice, however, that your users need administrator privileges to
> install a kernel mode driver.

Yup.  However you can access a device if there is a device driver
attached as well, as long as it is not open.  For example if you
have a USB to serial device, you can open it under libusb-win32
providing no other user space code has it open as a com port device.

Unfortunately with both Linux and Mac, libusb can only open devices
for which there is no driver currently attached (irrespective of
whether there is a user space program with the device open).

Windows also requires that a driver be present.  There is a do
nothing driver included with libusb-win32 that can be used.

Roger